2004

5.7

2005

6.1

2007

6.3

1940

6.5

1989

4.5

1975

7.2

1989

5.8

1979

7.3

2008

7.0

1999

5.5

2017

5.5

2010

6.7

1916

6.7

1993

5.3

1932

6.4

1929

6.8

2021

7.0

2002

4.1

2013

4.0

1968

5.8