Statistics

Data as of 20 July 2011

Number of books in PG Archives

• 36,701 PG U.S.

•  1,972 PG Australia

•    777 PG Europe

•    821 PG Canada

•  2,018 PrePrints

Top 10 Languages (# of books)

1. 30768 English

2.  1834 French

3.   776 German

4.   592 Finnish

5.   536 Dutch

6.   516 Portuguese

7.   405 Chinese

8.   308 Spanish

9.   291 Italian

10.   147 Greek

Book Milestones (PG U.S.)

#     1 -- Jul 1971 -- The United States Declaration of Independence

#    10 -- Aug 1989 -- The King James Bible

#   100 -- Jan 1994 -- The Complete Works of William Shakespeare

# 1,000 -- Aug 1997 -- La Divina Commedia di Dante

# 2,000 -- May 1999 -- Don Quijote

# 3,000 -- Dec 2000 -- A l'ombre des jeunes filles en fleurs (vol.3)

# 4,000 -- Oct 2001 -- The French Immortals Series

# 5,000 -- Apr 2002 -- The Notebooks of Leonardo da Vinci

#10,000 -- Oct 2003 -- The Magna Carta

#15,000 -- Jan 2005 -- The Life of Reason

#20,000 -- Dec 2006 -- Twenty Thousands Leagues under the Sea (audiobook)

#25,000 -- Apr 2008 -- English Book Collectors

#30,000 -- Oct 2009 -- The Bird Book

#40,000 -- Jun 2012 -- Extinct Birds

Weekly Averages:

• 85 per week in 2010
• 69 per week in 2009
• 122 per week in 2008*
• 78 per week in 2007
• 80 per week in 2006
• 58 per week in 2005
• 78 per week in 2004
• 79 per week in 2003
• 47 per week in 2002
• 24 per week in 2001

Monthly Averages:

• 367 per month in 2010
• 298 per month in 2009
• 532 per month in 2008*
• 338 per month in 2007
• 345 per month in 2006
• 252 per month in 2005
• 338 per month in 2004
• 348 per month in 2003
• 203 per month in 2002
• 104 per month in 2001

Yearly eBook Totals:

• 4408 new eBooks in 2010
• 3190 new eBooks in 2009
• 6392 new eBooks in 2008*
• 4049 new eBooks in 2007
• 4141 new eBooks in 2006
• 3019 new eBooks in 2005
• 4058 new eBooks in 2004
• 4176 new eBooks in 2003
• 2432 new eBooks in 2002
• 1244 new eBooks in 2001

• 3042 eBooks posted from 1971-2000

* 2008 included 2,431 PrePrints in the collection–in previous years this was under 400.

Interesting Comparisons: 1971-2006

• ~30 years, from 1971 to the end of 2000 to do the first 3,042 eBooks
• ~32 years, from 1971 to 2003 to do the first 10,000 eBooks
• ~10 years from 1993 to 2003 to grow from 100 eBooks to 10,100
• ~12.5 years from January 1994 to June 2006 to go from 100 to 20,100
• ~2.8 years from October 2003 to June 2006 from 10,000 to 20,000