1946

6.6

1984

6.9

1990

7.0

1960

7.3

1988

6.3

2007

0.0

2008

3.4

1985

5.6

1964

5.8

1938

4.0

2005

0.0

2015

0.0

2005

4.5

1967

6.0

1977

7.0

1989

8.0

2010

0.0

1950

6.4

1955

6.0

1943

5.8