2013

6.4

1961

6.9

1953

7.2

2006

7.8

1983

7.9

1996

7.5

2016

6.1

2001

6.8

2010

6.3

1990

6.1

2013

6.5

2009

8.5

2008

6.3

1993

6.5

1991

5.9

1988

5.5

2002

9.1

1993

6.2

2003

6.8

2017

6.5