1976

6.7

1973

6.9

2001

7.4

2001

5.5

2002

6.1

1982

6.8

2008

6.4

2007

5.9

2004

3.9

1982

6.7

1984

5.6

1999

6.8

1975

1.0

1978

7.5

1981

0.0

1980

2.0

1972

5.3

1972

3.0

1971

2.5

1971

4.8