1976

4.8

1976

6.4

1971

5.2

1992

6.0

2005

5.8

2003

4.5

2002

5.3

1993

5.5

1980

5.1

1999

5.6

1999

3.7

1982

4.9

1973

3.5

1975

5.8

1971

5.5

1967

5.5

1991

4.6

1976

0.0

1974

3.8

1971

6.0