1998

0.0

1996

6.5

1965

7.5

1968

7.2

2004

7.1

1973

6.9

2006

6.8

1997

6.9

1966

8.1

2006

5.7

1981

7.4

1952

7.9

1945

7.7

1957

5.0

2020

1.0

2017

7.0

2011

0.0

2023

9.5

1992

6.2

2007

4.6