1957

8.5

1966

7.7

1989

7.2

1969

5.5

2020

8.1

1992

6.6

1990

7.0

1996

6.7

2018

6.5

1992

7.4

1982

6.8

1951

5.3

1996

6.1

2008

6.5

2004

7.5

2000

6.8

2001

6.7

2023

10.0

1998

6.9

1926

4.3