How big is the luxury Second Home Market?

In a perfect world, we would like the following data for 2004, 2005 and YTD 2006:

# of second homes and condos sold in the US with values of $1 – $1.999m
# of second homes and condos sold in the US with values of $2 – $2.999m
# of second homes and condos sold in the US with values of $3 – $3.999m
# of second homes and condos sold in the US with values = or > $4m

If that data is further broken down by state or zip code that would be even better.

Finally, if available, we would also like information sorted by these price points and by the distance in miles or travel time between second homes and the purchasers primary home.