1945

8.0

1992

7.9

1959

7.8

1932

6.0

1932

5.5

1986

6.5

1964

6.2

1968

6.4

1965

6.3

1990

6.5

1994

6.1

2005

5.6

1995

7.3

1938

6.0

2015

6.9

1927

6.9

1977

7.0

1974

7.2

1914

0.0

1983

4.4