1999

7.4

2015

7.2

2003

7.1

2021

5.7

2006

6.6

1950

5.3

2014

6.5

1980

6.4

2002

5.6

1997

6.7

1996

3.1

2007

4.6

1963

6.5

1957

7.0

1941

6.2

2005

3.2

2020

7.7

1933

4.9

1964

7.1

2024

9.0