2000

6.9

1989

7.2

1954

8.4

1979

7.5

1977

8.2

1988

5.5

1984

6.8

1980

8.4

1995

7.3

1980

6.5

1985

6.2

2012

7.3

2006

6.1

2005

6.9

1956

7.7

1967

6.6

1987

5.3

1990

7.4

1974

7.5

1972

8.7