Women have been surprisingly outnumbering men in terms of the number of online population. The numbers and projections till the year 2012 are:

2007: 90.8 million males and 97.3 million females
2008: 93.5 million males and 100.4 million females
2009: 96.4 million males and 103.7 million females
2010: 99.3 million males and 106.9 million females
2011: 101.9 million males and 110 million females
2012: 104.1 million males and 112.8 million females

All Demographics statistics and Facts