1978

5.0

1990

0.0

2006

5.2

1965

1.0

2007

6.8

2012

4.7

1979

4.0

2015

4.0

2013

7.0

1980

1.0

2013

8.0

1971

6.4

2007

5.8

1995

4.3

1985

6.2