2011

5.2

2011

8.1

1998

7.8

1995

8.4

1991

8.3

2005

7.0

1982

8.1

1972

8.7

2012

7.4

2007

8.1

1997

7.9

1984

7.7

1979

8.2

1966

8.5

1999

8.4

2009

7.6

1981

7.9

1995

8.2

2017

7.5

2016

7.3