1987

6.9

2013

6.7

1987

2.0

2005

6.3

2016

4.0

2011

3.3

1990

6.8

1980

5.1

1999

6.4

2006

6.3

2016

5.4

1980

7.5

2002

6.8

2006

6.6

1969

3.0

1991

0.0

2014

5.2

1999

4.5

1983

5.4

2002

0.0