1990

5.6

1989

4.8

1980

5.5

1994

8.0

2005

0.0

1991

4.5

1958

4.0

1992

0.0

1991

5.8

2005

3.2

1974

2.0

1993

0.0

1958

5.3

1975

5.0

1976

5.2