2006

7.3

1993

7.9

1980

7.1

2004

7.4

1991

5.1

1995

7.4

1993

6.5

1990

5.8

1987

7.3

1991

7.6

1973

7.0

2000

8.1

1989

7.2

2020

6.2

1988

6.9

1979

7.3

1979

7.5

2006

6.4

1995

6.7

1945

0.0