2003

7.9

2003

7.0

1975

8.3

1992

5.9

2003

7.9

1982

7.6

1993

8.4

1999

8.2

2014

7.7

2009

7.7

2010

6.7

2015

7.9

2005

7.5

2017

7.0

1995

7.3

1987

7.8

1989

8.3

2013

7.5

2015

6.4

2011

8.5