1995

1.0

2015

4.1

1983

4.4

1976

0.0

2006

3.5

1974

6.0

2000

5.6

2016

6.4

2017

5.0

2018

4.2

1969

3.9

1972

3.0

1999

4.0

2012

0.0

2003

5.7

2009

3.9

1974

3.8

1971

6.0

1990

3.5

1996

2.8