2002

6.0

1976

2.8

2003

5.7

2000

4.8

1985

2.0

1979

6.0

1993

7.0

1996

3.4

1979

2.0

1971

4.0

1969

3.8

1986

4.5

2010

4.8

2005

5.8

2002

4.8

1973

3.4

1975

5.2

1976

6.2

1991

5.7

1970

2.5