1973

6.9

1982

5.5

1978

6.3

1997

7.1

1972

7.8

1971

8.2

1998

5.4

1995

5.5

1999

8.0

1982

6.0

1933

7.5

1994

6.3

1971

7.0

2022

6.4

1951

6.7

1976

6.6

1910

6.0

1997

5.9

2001

5.9

1931

7.3