2000

6.2

1997

8.1

1966

7.6

1983

8.1

1966

7.5

2006

7.5

2003

6.7

1974

5.2

1987

7.7

1996

7.4

1999

6.8

2005

8.7

1971

0.0

1957

0.0

1980

0.0

1968

0.0

2006

0.0

2016

4.3

1988

0.0

1988

0.0