1994

7.3

2005

5.6

1995

6.1

2016

6.5

1984

8.1

1972

6.2

1996

6.4

2016

3.9

1977

7.4

1984

6.9

1973

4.2

1974

7.3

0.0

2007

5.3

2003

3.9

1979

0.0

2004

5.9

2005

6.0

2006

6.4

2006

0.0