1937

4.6

1988

5.4

2000

5.8

1991

3.5

1993

6.1

1929

6.3

1953

7.1

2008

5.8

1945

6.2

2021

0.0

1990

7.3

2006

4.9

1964

6.9

1976

4.8

1975

4.0

1981

1.3

2008

6.3

2022

8.0

2009

8.0

2011

3.7