1973

4.2

1944

5.7

1945

7.0

1978

4.7

2010

5.6

2014

6.8

1966

5.6

1955

5.3

2009

1.0

1939

6.4

1932

0.0

1997

8.0

1934

6.5

1932

6.0

2017

6.0

2019

10.0

2008

0.0

2020

6.7

2020

4.8