1998

6.0

2005

5.1

1965

6.6

1971

6.8

1999

7.3

2002

3.3

2000

5.8

1972

0.0

1963

8.1

1992

3.3

1974

2.8

1987

4.5

2002

6.0

1959

7.7

1955

0.0

2007

5.6

1997

0.0

1987

0.0

1965

5.4

2008

8.0