2000

7.2

2004

6.0

1987

7.5

2016

5.9

2007

5.7

2019

6.9

1972

6.9

2003

6.3

1941

7.3

1993

6.9

2000

8.1

2017

6.5

2017

6.3

1979

6.7

2008

7.8

1940

7.8

2013

7.2

2012

6.6

1980

6.1

1983

7.2