The total number of new and revised editions released in the U.S. rose 39% in 2007, to 411,422 titles, according to preliminary figures released by R.R. Bowker. Output among traditional titles increased only 1% in the year, but sales of on-demand, short-run and unclassified titles soared, jumping from 21,936 to 134,773. Kelly Gallagher, general manager of business intelligence at Bowker, attributed the increase in the on-demand category to the increase in the use of print-on-demand by mainstream publishers, higher volumes of public domain titles produced using POD and increases in the use of POD by self-publishers and micro-publishers.

2002 2006 2007 Projected % Chng '06-’07 % Chng '02-’07
Source: R.R. Bowker
Agriculture 1,418 1,426 1,298 -9% -8%
Arts 6,574 9,201 9,423 2% 43%
Biography 6,873 11,271 10,615 -6% 54%
Business 6,918 8,719 7,651 -12% 11%
Computers 7,564 5,472 5,709 4% -25%
Cookery 1,956 2,705 2,673 -1% 37%
Education 6,829 6,449 7,335 14% 7%
Fiction 25,102 42,777 50,071 17% 99%
General Works 2,085 2,078 2,346 13% 12%
History 11,362 15,241 14,764 -3% 30%
Home Economics 1,434 1,755 1,682 -4% 17%
Juveniles 30,504 30,395 30,063 -1% -1%
Language 5,924 5,134 4,846 -6% -18%
Law 4,432 5,359 5,380 0% 21%
Literature 6,261 8,227 9,796 19% 56%
Medicine 9,495 10,931 10,720 -2% 13%
Music 3,376 3,545 3,407 -4% 1%
Personal Finance 473 582 538 -8% 14%
Philosophy, Psychology 8,894 12,961 12,635 -3% 42%
Poetry, Drama 5,742 10,700 10,258 -4% 79%
Religion 12,253 19,854 18,956 -5% 55%
Science 11,688 12,655 12,872 2% 10%
Sociology, Economics 20,969 27,675 24,596 -11% 17%
Sports, Recreation 5,800 6,666 6,363 -5% 10%
Technology 6,896 7,262 6,858 -6% -1%
Travel 4,316 5,376 5,793 8% 34%
Traditional Total 215,138 274,416 276,649 1% 29%
On Demand, Short Run, and Other Unclassified 32,639 21,936 134,773 514% 313%
Total 247,777 296,352 411,422 39% 66%