1936

0.0

1990

8.0

1941

5.6

1997

7.4

1997

6.8

1950

7.0

1996

4.2

1935

6.0

2014

2.5

1996

6.5

2005

6.3

1971

0.0

2001

6.2

1959

6.1

1983

6.2

1986

6.9

1996

5.9

2002

6.4

1991

6.2

1999

6.5