Venezuela’s economic collapse is among the world’s worst in recent history. The decline is now deeper than that of the Soviet Union after its breakup, and comparable only to Zimbabwe’s in the late 1990s, according to estimates from the Institute of International Finance, a Washington-based association of financial institutions.

The scale of the decline, resulting from poor policy decisions, economic mismanagement, and political turmoil, is like something one would only expect from extreme natural disasters or military confrontations, said Sergi Lanau, the IIF’s deputy chief economist.

Output has contracted by half over the past three years. Venezuelan consultancy Ecoanalítica expects gross domestic product to fall another 30% in 2019 amid hyperinflation, political instability, and recent U.S. economic sanctions.

President Nicolás Maduro’s government hasn’t released economic and social development indicators since 2016, when the country’s situation became dire. Most estimates and surveys since then are from consulting firms, universities and multilateral organizations.

Gross domestic product shrank from about $196 billion in 2013 to some $80 billion last year, smaller than that of Guatemala or Ethiopia, according to calculations from AGPV Asesores Económicos, a Caracas-based consulting firm, and the International Monetary Fund. The economy is on track to mark 14 consecutive quarters of contraction.