2003

7.8

1976

7.5

1997

7.5

2007

7.7

2006

8.2

2013

7.9

2000

7.6

2004

7.4

1983

7.9

2016

8.0

2015

7.7

2013

7.2

2011

7.7

2015

7.3

2019

7.3

2008

7.3

2006

4.0

2000

6.0

2015

6.8

2012

0.0