| Period Ending | Foundation License | % | Intermediate | % | Full | % | Total Stations | % |
|---|---|---|---|---|---|---|---|---|
| 3/2009 | 11,549 | +15.0% | 4,957 | +16.0% | 50,979 | +1.6% | 67,485 | +4.3% |
| 3/2008 | 10,042 | +20.9% | 4,274 | +18.6% | 50,398 | +2.2% | 64,714 | +5.7% |
| 3/2007 | 8,306 | +9.3% | 3,604 | +8.7% | 49,337 | -3.1% | 61,247 | -1.1% |
| 3/2006 | data unavailable (2007 percentages are annual averages over two years) | |||||||
| 3/2005 | 6,948 | -0.9% | 3,048 | +18.8% | 52,687 | -0.2% | 62,683 | +0.5% |
| 3/2004 | 7,008 | +4.0% | 2,565 | +1.6% | 52,799 | +2.1% | 62,372 | +1.6% |
| 3/2003 | 6,738 | 2,525 | -19.2% | 51,709 | -3.7% | 60,972 | +7.3% | |
| 3/2002 | 3,125 | -9.7% | 53,695 | -1.2% | 56,820 | -1.7% | ||
| 3/2001 | 3,462 | +8.7% | 54,352 | -1.5% | 57,814 | -0.9% | ||
| 3/2000 | 3,184 | +1.9% | 55,179 | -1.1% | 58,363 | -1.0% | ||
| 3/1999 | 3,124 | +9.8% | 55,802 | -1.0% | 58,926 | -0.5% | ||
| 3/1998 | 2,845 | +6.75 | 56,357 | -3.5% | 59,202 | -3.1% | ||
| 3/1997 | 2,665 | +7.0% | 58,402 | -0.9% | 61,067 | -0.6% | ||
| 3/1996 | 2,491 | +16.7% | 58,919 | -0.7% | 61,410 | -0.1% | ||
| 3/1995 | 2,134 | +42.4% | 59,323 | -3.6% | 61,457 | -2.5% | ||
| 3/1994 | 1,499 | +44.0% | 61,534 | +5.7% | 63,033 | +6.4% | ||
| 3/1993 | 1,041 | 58,201 | 59,243 | |||||