2006

7.2

1992

7.7

2007

6.3

2008

9.0

2018

3.7

2001

5.6

2008

4.6

2017

3.8

1961

6.2

2003

5.9

2016

2.0

1999

2.0

2016

6.2

2017

7.5

2014

6.8

2007

5.1

1929

1.0

2017

6.2

2017

7.8

2000

6.8