2000

7.2

2020

6.4

1988

6.5

1938

7.3

1996

5.9

1982

6.7

1989

9.2

2011

7.1

2010

9.1

2004

5.8

2009

5.5

2017

6.0

1982

5.8

1969

6.3

2010

4.4

2021

5.6

1969

7.9

2007

6.7

1987

7.1

1964

6.8