1939

7.2

1999

8.4

2014

8.5

1995

8.0

2004

6.9

1980

8.1

2012

6.9

1986

7.2

2002

8.4

2009

8.0

2010

7.7

1979

8.2

2008

6.3

1998

7.9

2011

8.3

2009

6.4

2019

6.8

1959

8.0

2015

7.8

1970

7.0