| YEAR | PRIVATE NON GUARANTEED | % | PUBLIC AND PUBLICALLY GUARANTEED | % |
| 2005 | $25.53 Billion | 20.7 | $25.53 Billion | 79.3 |
| 2006 | $9.28 Billion | 59.8 | $9.28 Billion | 40.2 |
| 2007 | $11.78 Billion | 70.3 | $11.78 Billion | 29.7 |
| 2008 | $12.79 Billion | 70.3 | $12.79 Billion | 29.7 |
| 2009 | $13.23 Billion | 68.7 | $13.23 Billion | 31.3 |
| 2010 | $12.84 Billion | 64.0 | $12.84 Billion | 36.0 |
| 2011 | $14.84 Billion | 60.3 | $14.84 Billion | 39.7 |
| 2012 | $16.24 Billion | 59.1 | $16.24 Billion | 40.9 |
| 2013 | $19.04 Billion | 56.5 | $19.04 Billion | 43.5 |
| 2014 | $ 24.43 Billion | 62.6 | $24.43 Billion | 37.4 |