1991

7.5

1989

7.1

2006

5.6

2005

6.7

2016

0.0

1931

7.2

1953

6.3

1968

6.3

2021

7.4

2018

4.0

1935

7.3

1964

7.2

2007

5.1

2002

6.9

2004

4.8

2008

5.5

1995

6.7

1932

6.9

1980

7.3

1981

7.4