1986

6.9

2015

5.7

2019

5.8

1986

2.0

2008

6.5

2017

7.4

1951

6.5

2017

7.3

1939

7.0

2006

6.0

1974

5.5

1991

0.0

1939

5.5

1992

7.0

2009

7.3

2005

6.0

2001

5.0

1969

6.7

1907

6.0

2025

0.0