1993

6.2

1979

4.7

2014

5.9

2003

6.3

2009

4.1

2003

6.9

2016

4.6

1965

6.8

2013

6.9

2017

6.4

2017

6.2

2014

6.4

2003

6.7

2012

5.0

1978

4.3

2006

6.5

1982

5.7

2008

7.5

2021

1.0