1993

6.7

1988

6.3

2015

6.6

2013

5.7

2013

6.0

1985

7.0

2002

5.9

2004

6.2

1997

0.0

1962

6.9

2014

5.7

2004

5.6

1996

0.0

2005

6.8

2003

6.6

2017

6.1

2016

4.4

2006

6.4

2013

5.5

2014

4.4