| Previous LI Tx | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 1,873 | 2,175 | 3,002 | 3,659 | 4,265 | 4,194 | 4,137 | 4,110 | 4,167 | 3,577 |
| No | 1,715 | 1,872 | 2,419 | 2,943 | 3,420 | 3,530 | 3,590 | 3,689 | 3,817 | 3,393 |
| Yes | 158 | 303 | 583 | 716 | 845 | 664 | 547 | 421 | 350 | 184 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| No | 91.6% | 86.1% | 80.6% | 80.4% | 80.2% | 84.2% | 86.8% | 89.8% | 91.6% | 94.9% |
| Yes | 8.4% | 13.9% | 19.4% | 19.6% | 19.8% | 15.8% | 13.2% | 10.2% | 8.4% | 5.1% |