1995

1.0

2015

4.1

1983

4.4

1976

0.0

1982

4.8

2006

3.5

2009

4.6

1977

7.3

2012

0.0

2009

6.1

1974

6.0

2000

5.6

2012

4.2

1973

5.3

2016

6.4

2017

5.0

2018

4.2

2018

5.5

1969

3.9

1972

3.0