1963

7.9

2006

6.0

2016

6.3

2019

5.8

1995

7.7

1960

7.5

1950

8.3

1990

6.8

1988

7.7

1956

7.1

1995

6.9

1928

7.3

1997

7.6

1949

8.0

1997

7.5

1984

8.0

1997

8.4

2004

8.4

1961

7.7

2003

8.3