Found these figures on GM's Europe site.

Noteworthy: "Aveo accounted for 21 percent of Chevrolet sales in Europe in 2009 and thereby continues to be among the most important models in Chevrolet Europe's range."

For the sedan (called the "4-door" in Europe):



# In the model range since: 2006
# Units sold in Europe until end of 2009: 226,500
On an average annual basis, that's 56,625 sedans.

Source: http://media.gm.com/media/intl/en/vehic ... rolet.html

For the hatchback / Aveo5 (called the "5-door" in Europe):



# In the model range since: March 2008
# Units sold in Europe until end of 2009: 381,000
22 months = 17,318 / month, or 207,818 per year.

Source: http://media.gm.com/media/intl/en/vehic ... rolet.html

For the 2-door hatchback: (called the "3-door" in Europe):



# In the model range since: June 2008
# Units sold in Europe until end of 2009: 50,500
19 months = 2657 / month, or 31,895 per year.

Source: http://media.gm.com/media/intl/en/vehic ... rolet.html