The election in 1973 of Carlos Andrés Pérez coincided with an oil crisis, in which Venezuela's income exploded as oil prices soared; oil industries were nationalized in 1976. This led to massive increases in public spending, but also increases in external debts, which continued into the 1980s when the collapse of oil prices during the 1980s crippled the Venezuelan economy. As the government started to devalue the currency in February 1983 to face its financial obligations, Venezuelans' real standards of living fell dramatically. A number of failed economic policies and increasing corruption in government led to rising poverty and crime, worsening social indicators, and increased political instability.