2008

4.7

2020

7.8

2017

6.7

2000

7.4

2002

6.3

2003

6.5

2004

3.8

1989

6.0

2010

4.5

1999

5.4

2013

5.0

1981

8.5

1992

4.9

1991

5.6

1994

7.3

2015

0.0

2008

6.8

2004

6.4

2016

3.5

2009

5.0