1986

8.0

2003

4.7

2001

6.1

1986

6.1

1998

6.0

2002

6.4

1993

7.9

1995

6.2

2004

0.0

1996

6.9

1999

5.3

1997

6.3

2008

0.0

2003

6.6

2018

5.2