1986

5.8

2014

3.3

2017

7.3

1973

6.5

1996

6.4

1989

5.8

1966

5.6

2000

5.8

2009

5.8

2012

5.7

1992

6.3

1997

5.5

2017

6.8

1992

0.0

1979

7.7

1993

3.8

2008

3.4

1995

6.8

2014

4.1

1991

0.0