A. Annual Statistical Supplement, 2011 (February 2012, .pdf and HTML format, 529p.).
www.ssa.gov/policy/docs/statcomps/supplement/2011/index.html
B. International Update: February 2012 (February 2012, HTML and .pdf format, 3p.).
www.ssa.gov/policy/docs/progdesc/intl_update/2012-02/index.html