2003

6.2

2005

9.9

2008

8.9

2007

7.5

2019

6.3

2001

8.9

2000

5.2

2011

7.0

2010

7.8

2012

4.8

2014

8.4

1990

6.6

2015

5.5

2016

6.7

2009

7.3

2009

6.8

2005

6.1

2006

6.2

1993

7.0

1975

6.8