2002

5.5

1974

3.9

1998

6.3

1994

7.8

1995

4.4

1978

6.8

1985

7.5

1995

7.8

1999

5.8

1993

7.0

1990

5.7

1991

5.6

1995

5.0

1996

5.7

1994

4.9

1993

6.7