1998

8.1

2002

8.4

1934

6.4

1975

7.0

2007

7.1

2007

8.1

1983

5.8

1932

7.8

2005

6.5

1973

7.9

2011

5.9

1980

6.4

1930

5.6

1959

7.0

1972

3.8

2020

4.7

2001

5.7

1985

4.6

2009

6.6

1953

6.7