6.0
1980
5.5
1975
6.6
1968
7.8
1961
8.0
1988
5.1
2003
4.4
1999
1992
7.1
1990
6.2
1979
1963
3.0
2001
1993
6.1
1953
7.0
3.2
1997
3.7
1947
3.8
2008
1989