1999

7.9

1990

7.4

2004

7.9

2009

8.0

1998

8.2

2003

7.8

2000

7.6

1993

7.1

2006

4.9

2014

7.9

2001

6.5

2008

6.3

2005

7.0

2009

8.0

1999

6.5

2003

0.0

1998

7.1

2003

7.8

2003

7.5

2019

8.0