Here are some figures for cd and lp sales and shipments for 2010:
According to Nielsen SoundScan, in 2010:
235 million cds were sold (approximately)*
2.8 million lps were sold
*cds were not broken out separately, thus the approximation.
According to the RIAA, in 2010:
226 million cds were shipped
4.0 million lps were shipped
The Beatle's Abbey Road was the biggest selling lp with 35,000 sold. Suburbs by Arcade Fire was a distant second.
Sales of cds are declining, sales of lps and digital downloads are increasing. Disc players will remain an essential item for many audiophiles and casual listeners for a long time to come though.
Someone may even build a disc player that makes cds sound better than vinyl starting a cd revival. Could happen.