1974

10.0

2002

0.0

2004

7.3

1990

6.0

1991

6.1

1988

6.2

1994

5.1

1996

5.4

1993

6.7

1997

4.5

1978

3.2

1979

5.0

2003

5.8

2004

5.6

2004

6.3

2000

5.7

1996

6.6

1989

6.8

2005

4.7

1982

7.0