2010

6.1

2006

5.9

2004

3.5

1978

5.9

1980

4.7

2000

4.6

2005

5.0

2000

2.3

2001

2.0

1979

6.2

2007

6.5

2009

4.4

2010

4.2

2015

6.9

1995

5.9

2019

4.9

2025

7.9

2011

6.2

1984

5.4

1982

4.1