2003

7.4

1988

5.0

1993

5.8

1970

5.6

2001

6.6

2000

5.5

2009

7.2

1919

5.2

2009

6.5

1913

0.0

1980

6.8

1982

6.6

1992

7.5

2005

6.2

1992

7.0

2017

7.4

1997

7.1

1990

6.1

1974

5.5

1941

6.2