1937

4.6

1991

3.5

1981

1.3

1990

7.3

2006

4.9

1993

6.0

1929

6.2

1953

7.1

2009

8.0

1945

6.2

1976

4.8

2008

5.8

2021

0.0

1964

6.9

1975

4.0

2000

5.8

1988

5.4

2008

6.3

2020

6.2

2001

5.3