1995

0.0

1965

1.0

1988

5.0

1988

6.2

1999

5.5

1989

0.0

1994

7.1

1971

6.4

1970

6.2

2006

4.3

2005

5.8

1985

4.4

1988

0.0

1990

0.0

1987

2.0

2007

5.0