1988

6.9

1997

6.2

1996

5.6

1985

7.5

1992

6.8

2004

7.1

2019

7.7

1969

4.5

1998

9.4

1963

7.0

1998

7.1

2022

4.2

2001

5.8

1981

6.5

1985

6.6

2004

6.1

2008

7.3

1984

6.3

1991

5.2

1988

6.7