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Adult HardcoverTradepaperbackAdult Mass MarketChildrens HardcoverChildrens PaperbacksEbooksAudiobooks

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Jan 2008^4.2% (94.4 m)^37.6% (135.2m)^17.3% (65.3m)-21.9% (33.6m)^28.2% (34.0 m)^26.1 (3.1m)^16.8% (13.5m)

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Feb 2008-26.4% (83.5m)^30.8% (128.8m)^0.4% (59.5 m)^8.1 (40.7m)^7.2% (37.2 m)^6.7 (2.6m)-5.7 (10.8m)

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Mar 2008-25.9% (103.1m)^6.2% (138.5m)-10.9 (67.4m)^2.4 (48.1m)^9.1% (51.3m)^58.9% (4.4)-44.0% ($11.0m)

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April 2008-4.6% ($110 m)^ 4.5% (118.3 m)^ 4.7% (53.2 m)-19.9% ($39 m)- 3.1% ($39.3 m)^ 19.9% (3.4 m)^ 1.7% (12.6 m)

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May 2008^4.4 % ($166m)-7.3% ($100.7 m)-9.6% ($77.2 m)-4.9% ($40.4 m)^0.4% ($42.5 m)^24.3% ($3.3 m)-38% ($12.6 m)