From 1945 until 1991 Skopje was the capital of the Socialist Republic of Macedonia. The city expanded and the population grew during this period from just over 150,000 in 1945 to almost 600,000 in the early 1990s. Continuing to be prone to natural disasters the city was flooded by the Vardar River in 1962 and then suffered considerable damage from a major earthquake, measuring 6.1 on the Richter scale, which killed over 1,000 people and made another 120,000 homeless. Eighty percent of the city was destroyed by the earthquake, and numerous cultural monuments were seriously damaged. The losses from the quake amounted to a massive 150% of Macedonia's GNP at the time and 15% of Yugoslavia's GNP. A major international relief effort saw the city rebuilt quickly, though much of its old neo-classical charm was lost in the process. The new master plan of the city was created by the then leading Japanese architect Kenzo Tange. The ruins of the old Skopje train station which was destroyed in the earthquake remain today as a memorial to the victims along with an adjacent museum.