| Previous LI Tx | Year | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
| Total | 23,531 | 25,930 | 28,277 | 30,613 | 33,121 | 35,714 | 38,354 | 41,105 | 42,286 |
| No | 21,679 | 23,942 | 26,133 | 28,348 | 30,728 | 33,167 | 35,656 | 38,264 | 39,388 |
| Yes | 1,852 | 1,988 | 2,144 | 2,265 | 2,393 | 2,547 | 2,698 | 2,841 | 2,898 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| No | 92.1% | 92.3% | 92.4% | 92.6% | 92.8% | 92.9% | 93.0% | 93.1% | 93.1% |
| Yes | 7.9% | 7.7% | 7.6% | 7.4% | 7.2% | 7.1% | 7.0% | 6.9% | 6.9% |