1992

0.0

1989

4.3

2005

4.3

1990

4.2

1983

3.4

1989

2.5

2009

4.0

1978

5.0

1994

4.5

1987

3.8

1990

3.7

1991

3.7

2003

0.0

2001

3.8

1978

3.5

1991

0.0

1988

4.0

1988

5.0

1986

4.7

1990

4.6

2000

7.0

2006

5.2

2006

4.4

1980

5.1

2013

5.9

1974

4.8

1985

4.1