According to the latest figures over at Hitwise, Google’s market share is inching closer to the 73% mark, that’s up 0.35% since last month, and up nearly 5% compared to April of 2008.

When compared to April of 2008 Yahoo is down considerably, from 20.29% to 16.27%. MSN has also lost ground, and is sitting at 5.68%.

It is no surprise that Google has continued to dominate, but the real question is how far can they go. One would think that they have to cap out eventually, and they are likely getting close. By this time next month, at the current rate, they should exceed 73% market share, but will they ever reach 80%? Only time will tell.