Last year (2010) was assisted by the federal home buyer tax credit.  Thus, even though 2011 shows a decline compared to 2010, it's important to note the (slight) increase as compared to 2009.

The second half of the year, however, will be key.  Last year's 3rd and 4th quarter were rather slow, as many (many!) buyers were enticed towards the first half of the year before the tax credit expired.  Thus, this year still has plenty of opportunity to outperform last year since we don't have a tax credit affecting the timing of the market.
 
Stay tuned!