2002

6.1

1985

5.2

2000

7.0

1986

7.1

1991

5.8

1982

7.1

1991

6.3

1951

8.7

1981

6.0

1974

0.0

1996

7.3

1974

8.1

1958

0.0

1965

7.8

1976

7.4

1973

7.0

1981

0.0

1989

4.0

1992

1.0

1982

6.7

1984

6.6

1977

5.8

1968

9.5

1976

7.0

1977

0.0

1988

6.7

1974

5.3

1990

7.4