2003

7.7

1983

8.2

1998

7.8

1960

8.3

2001

7.3

1987

7.8

2015

7.8

2016

7.9

2015

7.6

2006

7.0

2010

7.7

2013

7.2

2012

7.2

1994

6.5

1985

7.4

1999

7.8

1998

7.5

1966

8.0

2009

4.6

2010

7.3