2021

5.6

2007

6.7

2000

6.5

2007

7.6

1992

5.7

2004

6.9

1970

4.2

1996

7.0

1988

6.3

1994

6.7

1990

6.7

1948

7.5

1975

6.1

2023

9.2

1980

6.9

1985

7.6

1991

5.7

2002

5.8

2006

6.6

1998

5.5