I don't have actual album sales numbers, but Small Miracles reached number 5 on the Billboard Top Canadian albums earlier this year. Check out the website allmusic.com for complete information on just about anyone. It is a terrific website that gives brief overviews, bios, complete album listings and song credits as well as awards information. I have it as one of my favorites.
Also, you can check the SOCAN charts at jam.canoe.ca/music/charts for the latest listing of the top Canadian albums. It also has a regional feature that can identify the top album sales in all major Canadian cities, the default setting being Toronto.
I have been following Blue Rodeo since the middle nineties when my daughter went to one of their concerts in the Buffalo, NY area and have been hooked ever since.
I hope this helps to answer your inquiry and appears OK since it is my first post.
Bill