1993

5.5

2013

6.5

1976

6.1

1976

3.0

2005

1.8

1972

10.0

2008

3.3

1973

3.4

1975

5.2

1967

5.1

1982

4.1

2000

4.8

1985

2.0

1979

6.0

1968

3.2

1999

3.5

1970

2.7

1971

4.6

1977

5.0

1991

4.0