2002

7.6

1997

6.6

1998

8.3

1959

7.8

1999

7.0

1937

4.6

1969

6.8

1995

6.2

1992

5.4

2006

5.4

2005

7.2

1971

0.0

2008

8.0

1988

5.4

1995

7.3

0.0

1951

7.6

1974

7.9

1985

7.8

1932

7.0