1976

7.0

1982

7.2

1992

6.7

1966

6.6

1968

7.4

1993

6.1

2022

6.9

1966

7.4

1969

5.5

1997

6.8

2001

6.8

1997

5.2

1996

7.8

1965

7.3

1982

5.0

1999

8.4

2006

7.0

1984

7.4

1953

0.0

1997

3.0