2013

6.4

1990

4.9

1977

5.9

2016

6.5

2016

5.4

1980

4.8

1995

0.0

1973

4.9

1968

5.5

2006

3.8

1976

0.0

1991

6.7

2003

3.1

1994

3.5

1974

6.0

2010

1.9

1993

4.0

1992

1.0

1982

5.2

1999

3.8