| Peak PRA | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 4,226 | 4,610 | 5,355 | 6,034 | 8,038 | 11,851 | 15,399 | 19,216 | 22,924 | 25,465 |
| 0-9% | 2,343 | 2,618 | 3,086 | 3,489 | 4,722 | 7,200 | 9,438 | 11,657 | 13,596 | 14,253 |
| 10-79% | 1,077 | 1,112 | 1,282 | 1,430 | 1,857 | 2,629 | 3,286 | 4,030 | 4,871 | 5,386 |
| 80%+ | 714 | 797 | 875 | 995 | 1,295 | 1,831 | 2,238 | 2,726 | 3,395 | 3,758 |
| Unknown | 92 | 83 | 112 | 120 | 164 | 191 | 437 | 803 | 1,062 | 2,068 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| 0-9% | 55.4% | 56.8% | 57.6% | 57.8% | 58.7% | 60.8% | 61.3% | 60.7% | 59.3% | 56.0% |
| 10-79% | 25.5% | 24.1% | 23.9% | 23.7% | 23.1% | 22.2% | 21.3% | 21.0% | 21.2% | 21.2% |
| 80%+ | 16.9% | 17.3% | 16.3% | 16.5% | 16.1% | 15.5% | 14.5% | 14.2% | 14.8% | 14.8% |
| Unknown | 2.2% | 1.8% | 2.1% | 2.0% | 2.0% | 1.6% | 2.8% | 4.2% | 4.6% | 8.1% |