2008

5.6

1984

4.7

2006

6.8

1982

6.1

1994

6.1

1969

5.3

1983

10.0

1974

4.9

1977

5.6

1956

6.9

2010

6.3

1978

4.7

1973

3.4

1976

4.3

1977

4.6

1965

1.0

1977

3.1

1970

3.3

1975

3.1

1977

3.2