2001

7.8

2004

7.3

1990

7.7

1995

5.9

1984

7.0

2005

7.1

1982

5.5

1963

0.0

1987

0.0

2007

6.8

1964

6.2

1932

6.0

1999

0.0

1988

8.0

1992

5.7

2006

7.8

1973

7.5

1973

0.0

2004

5.6

1997

6.1