2005

7.5

2000

7.4

2017

6.5

2004

7.2

1999

7.4

1940

8.3

1967

6.7

1964

8.1

1987

6.8

1951

6.0

1979

6.6

1992

4.7

2014

7.5

2019

6.2

2002

5.8

2002

5.8

1974

6.4

1995

6.1

1991

6.9

1979

5.8