2004
2005
2006*
2007*
37.0%
42.4%
47.9%
25.8%
34.3%
29.7%
25.0%
49.9%
109.5%
104.7%
99.4%
108.0%
92.7%
70.1%
52.5%
193.4%
-12.2
20.1
13.5
6.1
-3.64
3.74
8.22
17.11
Profitability**
1.1%
8.4%
12.9%
9.8%
-8.4%
8.2%
15.6%
26.1%
-4.8%
6.2%
11.5%
18.2%