2001

2.0

2003

2.8

1992

4.6

1994

3.8

2000

3.0

1979

5.4

1981

3.9

2012

3.7

2002

0.0

2013

5.2

1995

4.7

1995

5.8

1965

0.0

1974

5.9

1969

3.0

1998

4.0

2000

3.2

2013

4.2

2012

1.5

1987

0.0