2007

6.5

1974

5.8

1994

7.8

1980

3.0

1982

1.0

1993

6.3

1971

5.3

1985

7.7

1983

5.0

2007

7.2

1975

0.0

1983

7.5

1973

5.9

1974

5.5

2006

7.9

1974

7.4

2002

8.1

1973

6.7