1994

8.0

1994

4.9

1993

6.3

2005

5.0

1994

7.8

1991

7.4

1995

3.0

1987

7.7

2001

8.0

1989

8.3

1998

7.1

1997

4.0

2006

7.3

1990

5.0

2002

7.2