Statistics
SEER (Surveillance, Epidemiology, and End Results)
The Surveillance, Epidemiology, and End Results (SEER) Program of the National Cancer Institute (NCI) is an authoritative source of information on cancer incidence and survival in the United States. The SEER Program registries routinely collect data on patient demographics, primary tumor site, tumor morphology and stage at diagnosis, first course of treatment, and follow-up for vital status. The SEER Program is the only comprehensive source of population-based information in the United States that includes stage of cancer at the time of diagnosis and patient survival data.
SEER Cancer fact sheet:
http://www.seer.cancer.gov/statfacts/html/mulmy.html?statfacts_page=mulmy.html&x=13&y=18
You can search for more specific SEER data here: http://www.seer.cancer.gov/faststats/
The American Cancer Society tracks data here: http://www.cancer.org/docroot/STT/stt_0.asp
but they do not specifically track multiple myeloma.