2003

8.0

2002

7.5

1985

3.7

2020

6.9

1999

8.2

2003

7.1

2003

6.7

2003

7.2

1980

2.0

2005

6.2

1987

4.0

2001

5.4

1988

7.1

2002

5.7

2001

6.1

1993

6.8

2002

6.8

1993

6.9

2008

6.3

1989

5.9