1995
4.7
8.7
8.20
9.1
1997
2.23
1998
12.8
1999
3.12
2000
6.19
2001
7.25
2002
4.20
10.24
2003
3.25
2006
8.5
2007
4.22
5.25
2008
6.25
2011
7.9