How many novels have been written through NaNoWriMo?

How many novels have been written through NaNoWriMo?
1999: 21 participants and six winners
2000: 140 participants and 29 winners
2001: 5,000 particpants and more than 700 winners
2002: 13,500 participants and around 2,100 winners
2003: 25,500 participants and about 3,500 winners
2004: 42,000 participants and just shy of 6,000 winners
2005: 59,000 participants and 9,769 winners
2006: 79,000 participants and 13,000 winners
2007: 101,510 participants and 15,333 winners