The separation was completed at the 1972 Winter Olympics with the use of separate flags and anthems. Because of the boycotts of the 1980 and 1984 summer games, only in 1972, 1976 and 1988 did two different German teams with different symbols compete against each other at Summer Olympics (not counting the Saar team of 1952). East Germany ceased to exist in 1990, when its five states, together with Berlin, joined West Germany in German reunification.