This graph compares wordpress, blogger, movable type, typepad.
The market share of movable type and typepad is so small they are almost undetectable – just along the baseline of the graph.
To see more stats cut and paste this link: http://www.google.com/trends?q=wordpress%2C+blogger%2C+movable+type%2C+typepad&ctab=0&geo=all&date=all