2005

3.7

1942

6.9

1977

6.6

1960

8.4

1966

8.0

1968

6.7

1991

8.3

1953

7.6

1979

8.1

2003

7.8

2012

7.1

1994

7.4

2019

8.1

1994

6.7

2009

7.6

1961

7.8

1999

5.6

2000

7.3

1978

8.0

1956

7.5