2002

6.7

1971

7.5

1995

6.6

2006

7.4

2000

7.0

1964

7.6

2005

5.5

2018

7.2

2005

7.0

2000

7.3

1979

7.7

1961

7.3

1963

7.0

1964

7.0

2007

6.9

1967

6.9

1991

7.7

2003

5.8

1939

6.0

1940

8.5