1966

6.3

1996

6.5

1979

7.7

1977

7.7

1968

7.1

2002

7.0

1942

6.6

2017

5.1

1969

6.1

1933

5.9

1931

0.0

2017

5.0

1992

4.6

1963

7.1

1985

7.0

1962

7.7

1992

6.7

2007

7.4

1998

7.3

2005

5.5