1998

5.8

2009

5.1

1998

6.0

2015

7.1

2002

7.4

1996

6.5

2001

7.6

1999

5.7

2001

0.0

2004

5.4

1996

7.0

2000

5.5

1997

3.5

2004

5.7

1999

7.9

1995

6.8

1999

6.9

1997

5.1