After World War II, Transnistria was heavily industrialised, to the point that, in 1990, it was responsible for 40% of Moldova's GDP and 90% of its electricity, although it accounted for only 17% of Moldova's population. After the collapse of the Soviet Union, Transnistria wanted to return to a "Brezhnev-style planned economy". However, several years later, it decided to head toward a market economy.