1981

5.6

1971

7.8

6.0

0.0

1987

6.3

2008

5.0

1989

8.2

2013

6.1

2006

8.8

1999

5.0

7.0

4.9

2003

9.2

1967

9.0

10.0

2014

9.7

0.0

0.0

1985

0.0

7.0