1990

5.8

1986

6.6

1995

2.8

1983

0.0

2008

3.8

1980

6.0

1976

5.0

2016

6.4

2019

8.6

2007

7.1

2007

3.3

1981

5.5

2010

0.0

1989

4.0

1978

5.0

2017

6.4

2001

3.6

1993

3.5

2017

5.3

2014

5.4