This week Billboard published its final charts dated in the 2011 calendar year. All in all, there were 31 LPs that rose to #1 on the Top 200 in 2011, several of which we highlighted in both our Summer and Fall Music Previews. We dissected the 13 chart-toppers from the first half of the year back in late June. (Adele's 21 still ruled when all was said and done, with over 5 million copies sold by the end of December.) Now flip through the gallery of the 18 albums that triumphed from July on!