1931

3.8

2003

5.7

2001

6.8

1993

6.1

2005

6.3

2008

5.1

2016

6.3

2004

6.0

1937

4.6

1988

5.6

2018

0.0

1976

4.8

1994

6.2

2019

0.0

2017

5.5

2020

6.6

1941

0.0

1964

6.9

1999

5.8

1989

5.6