2013

6.1

2000

7.9

1995

6.5

2019

6.4

2013

6.7

1999

7.4

2010

7.2

1999

8.0

2003

5.7

2017

6.9

2009

6.6

2015

7.2

2012

7.2

1996

6.4

1983

7.4

2017

6.5

1978

6.8

1982

5.4

2009

5.3