2002

6.8

1989

6.9

1992

7.4

1981

8.1

2022

6.4

1991

6.3

1984

6.7

1953

6.4

1963

5.9

1975

6.9

1970

7.1

1967

6.9

1961

6.8

1958

6.0

1957

7.9

1999

6.7

1974

4.9

2001

6.4

2007

7.6

2000

7.2