2012

2.5

1972

3.5

1973

0.0

1980

1.0

2005

3.8

1977

3.8

1970

3.8

1989

4.2

2001

3.8

2002

3.4

1999

3.2

5.7

1972

3.2

1991

4.7

2009

6.0

1986

4.0

1976

3.3

1969

0.0

1978

5.0

1974

4.9