1995

7.6

1977

1.0

1969

6.8

1979

6.4

1962

7.9

2012

0.0

2009

6.2

1985

2.0

1972

4.4

1997

4.5

1996

9.3

2002

6.8

1974

5.5

2008

5.6

1995

5.4

1981

5.8

2010

7.6

1979

0.0

2014

6.0

1978

0.0