2014

6.9

1982

5.8

1976

0.0

1978

7.2

2005

5.5

2015

6.8

2009

5.6

2014

6.4

2017

8.0

1923

0.0

2007

6.2

1914

1.0

1973

9.0

1951

6.7

1980

0.0

1993

4.2

1997

6.7

2017

6.7

2022

7.2

2021

6.5