2005

7.5

2006

5.9

2005

5.8

1999

5.5

1979

6.1

2001

7.1

1937

7.8

1931

8.1

1940

7.2

1999

7.8

2002

6.3

2003

7.6

1991

7.5

2009

6.8

2007

8.0

1969

5.0

2007

5.4

2021

0.0

1988

1.0

1958

7.5