2002

5.9

2003

6.6

1994

5.7

1994

5.0

2001

7.6

1991

7.4

2012

5.5

1989

3.0

1999

6.8

1995

5.1

1993

2.5

1996

5.5

1996

7.0

1999

7.9

1998

6.4