1984

7.6

2007

5.2

1986

6.0

2002

3.0

1994

3.9

1992

6.3

1983

5.3

1990

0.0

1992

7.4

1995

7.2

1981

4.5

1991

3.5

1973

4.8

1996

6.2

2000

6.4

1987

6.5

2005

8.3

1996

5.6

1969

6.7

1995

6.3

1995

5.8

1995

7.7

1980

5.0

1993

8.4

2000

5.4

1984

0.0

1989

6.1

1979

4.4