2012

6.7

1995

5.8

2010

7.8

2014

5.7

2012

6.4

2011

7.6

2016

6.5

1998

5.2

2013

7.2

1990

7.4

1999

7.9

1983

7.0

1986

5.8

2005

6.8

2014

6.2

2008

3.8

2013

7.6

1985

7.2

1999

8.7

2019

1.0

1999

7.9