1961

6.0

1996

6.8

1972

6.9

2004

5.9

2001

5.9

2003

5.7

1988

7.3

1943

7.5

2004

6.7

2007

4.5

2008

5.0

1976

5.6

1959

5.0

2014

5.7

2015

7.1

2022

0.0

2020

0.0

2002

5.8

2003

4.4

2006

6.6