1983

6.4

1999

5.3

2023

5.5

2005

6.7

1955

7.5

1989

7.2

1996

6.8

1984

8.0

1998

7.3

1957

8.5

1966

7.7

1966

7.3

1973

3.5

2002

7.1

1948

7.9

1984

6.7

1999

7.6

1987

4.5

1995

6.3

1988

7.3