Commodity Booms And Busts In Emerging Economies

Emerging economies, particularly those dependent on commodity exports, are prone to highly disruptive economic cycles. This paper proposes a small open economy model for a net commodity exporter to quantitatively study the triggers of these cycles. The economy consists of two sectors, one of which produces commodities with prices subject to exogenous international fluctuations. These fluctuations affect both the competitiveness of the economy and its borrowing terms, as higher commodity prices are associated with lower spreads between the country's borrowing rate and world interest rates. Both effects jointly result in strongly positive effects of commodity price increases on GDP, consumption and investment, and a negative effect on the total trade balance. Furthermore, they generate excess volatility of consumption over output and a large volatility of investment. The model structure nests various candidate sources of shocks proposed in previous work on emerging economy business cycles. Estimating the model on Argentine data, we find that the contribution of commodity price shocks to fluctuations in post-1950 output growth is in the order of 38%. In addition, commodity prices account for around 42% and 61% of the variation in consumption and investment growth, respectively. We find transitory productivity shocks to be an important driver of output fluctuations, exceeding the contribution of shocks to the trend, which is smaller, although not negligible.

We compile a historical dataset covering nearly 40 years of booms and busts in the commodity terms of trade of over 150 countries. We discuss the characteristics of these events and their effects on macroeconomic performance and, in particular, compare the most recent commodity-price cycle with its historical precedents.

Why booms happen -- Why this boom won't continue -- Managing booms and busts -- Learning from experience -- Who manages the boom? -- How to manage booms.

Commodity-exporting countries have significantly benefited from the commodity price boom of recent years. At the current juncture, however, uncertain global economic prospects have raised questions about their vulnerability to a sharp fall in commodity prices and the policies that can shield it from such a shock. To address these questions, this paper takes a long term (4 decade) view at emerging markets' commodity dependence, the history of commodity price busts and the role of policies in mitigating or amplifying their economic impact. The paper highlights the stark difference in trends between Latin America - one of the most vulnerable regions given its high, and rising, commodity dependence - and emerging Asia - which has evolved from being a net exporter to a net importer of commodities in the last 40 years. We find evidence, however, that while commodity dependence is an important ingredient, a country's ultimate degree of vulnerability to commodity price shocks is to a great extent determined by the flexibility and quality of its policy framework. Policies in the run-up of sharp terms-of-trade drops - especially when those are preceded by booms - play a particularly important role. Limited exchange rate flexibility, a weak external position, and loose fiscal policy tend to amplify the negative effects of these shocks on domestic output. Financial dollarization also appears to act as a shock "amplifier."

Macroeconomic volatility in commodity-exporting economies is closely tied to fluctuations in international commodity prices. Commodity booms improve exporters' terms of trade and loosen their borrowing conditions, while busts lead to the reverse. This paper studies optimal monetary policy for commodity exporters in a small open economy framework that includes a key role for financial conditions. We incorporate the interaction between the commodity and financial cycles via a working capital constraint for commodity producers, which loosens as commodity prices increase. A rise in global commodity prices causes an inefficient reallocation towards the commodity sector, which expands and increases its demand for inputs. The real exchange-rate appreciates, but because domestic fims do not internalize that the appreciation reduces the scale of the reallocation, they do not raise prices enough. An inefficient boom takes place, with inflation rising and output increasing relative to its welfare-maximizing level. Returning inflation to target is not sufficient to close the output gap, leaving the policymaker facing a stabilization tradeoff. The optimal policy lets the exchange rate appreciate and raises interest rates, with a larger rate rise required the greater the loosening in borrowing conditions. The paper compares alternative policy rules and discusses a key practical challenge for emerging and developing economies: how to transition to a stable path from initial conditions of high and persistent inflation.

Fluctuations in commodity prices are an important driver of business cycles in small emerging market economies (EMEs). We document how these fluctuations correlate strongly with the business cycle in EMEs. We then embed a commodity sector into a multi-country EMEs’ business cycle model where exogenous fluctuations in commodity prices follow a common dynamic factor structure and coexist with other driving forces. The estimated model assigns to commodity shocks 42 percent of the variance in income, of which a considerable part is linked to the common factor. A further amplification mechanism is a ”spillover” effect from commodity prices to risk premia.

The dramatic price falls of 2014–2015 marked the end of the most powerful and enduring commodity boom since the Second World War. Now in its third edition, this book acts as a guide to the ins and outs of the primary commodity universe. Updates to this edition reflect on the consequences of both China's economic slowdown as its industrialization enters a new, less commodity demanding phase, and changes in the USA's trade policy under the Trump administration. Additionally, this edition takes into account recent developments in world oil markets and examines the effects of increased climate concerns. The authors introduce and explain pertinent issues surrounding international commodity markets such as the global geography of raw materials, price formation, price trends, the role of commodity exchanges, the threat of depletion, cartel action, state ownership, emerging commodity nationalism and more.

After skyrocketing over the past decade, commodity prices have remained stable or eased somewhat since mid-2011—and most projections suggest they are not likely to resume the upward trend observed in the last decade. This paper analyzes what this turn in the commodity price cycle may imply for output growth in Latin America and the Caribbean. The analysis suggests that growth in the years ahead for the average commodity exporter in the region could be significantly lower than during the commodity boom, even if commodity prices were to remain stable at their current still-high levels. Slower-than-expected growth in China represents a key downside risk. The results caution against trying to offset the current economic slowdown with demand-side stimulus and underscore the need for ambitious structural reforms to secure strong growth over the medium term.

We develop an empirical model to predict banking crises in a sample of 60 low-income countries (LICs) over the 1981-2015 period. Given the recent emergence of financial sector stress associated with low commodity prices in several LICs, we assign price movements in primary commodities a key role in our model. Accounting for changes in commodity prices significantly increases the predictive power of the model. The commodity price effect is economically substantial and robust to the inclusion of a wide array of potential drivers of banking crises. We confirm that net capital inflows increase the likelihood of a crisis; however, in contrast to recent findings for advanced and emerging economies, credit growth and capital flow surges play no significant role in predicting banking crises in LICs.

This paper evaluates how successful is a policy of exchange rate stabilization to counteract the negative effects of a Dutch Disease episode. We consider a small open economy model that incorporates nominal rigidities and a learning-by-doing externality in the tradable sector. The paper shows that leaning against an appreciated exchange rate can prevent an inefficient loss of tradable output but at the cost of generating a misallocation of resources in other sectors of the economy. The paper also finds that welfare is a decreasing function of exchange rate intervention. These results suggest that stabilizing the nominal exchange rate in response to a Dutch Disease episode is highly distortionary.