1967

7.1

1993

6.4

1966

6.0

1955

6.8

1932

7.4

1978

7.4

1953

7.7

1935

7.3

1940

7.4

1967

7.3

2007

6.7

1968

0.0

1967

0.0

2003

5.1

1974

0.0

2002

7.1

2003

6.0

1940

5.5

1969

0.0

1998

6.0