描述Project Gutenberg total books.svg	English: Graph showing total number of books published by Project Gutenberg over time.
日期	2008年7月2日
來源	Own work by uploader, based on the website of Project Gutenberg
作者	Qef
其他版本	Alternative graph, bitmap version of this but based on slightly different data: Image:PG_growth.png
SVG開發 InfoField	本SVG檔案的原始碼通過W3C驗證。   本vector image使用Gnuplot創作。

This file may be updated to reflect new information. If you wish to use a specific version of the file without it being overwritten, please upload the required version as a separate file.

This graph was generated with gnuplot using the following input file:

set terminal svg font "DejaVu Sans,12" size 600,400
set output "Project_Gutenberg_total_books.svg"

set xdata time
set timefmt "%Y-%m"
set xrange ["1994-01":]
set format x "%Y"
set key off

set tics nomirror
set grid
set border 3

# Wikipedia in many languages uses this file.
# To avoid translation, use emojis.
set xlabel "📅"  # Year
set ylabel norotate "📚"  # Number of Books

plot "Project_Gutenberg_total_books.data" using 1:2 \
     with line linetype rgbcolor "red" linewidth 2

The data file Project_Gutenberg_total_books.data is based on the website of Project Gutenberg.

• Records from 1 to 40,000 are derived from the Book Milestones (PG U.S.) section of Statistics (archived) on Project Gutenberg News.
• Later records are according to Release Dates of books by EBook-No. For example, John Gutenberg, No. 50,000, was released on 2015-09-17. The assumption can be verified by Project Gutenberg Releases eBook #50,000 (archived) on Project Gutenberg News.

The data file currently contains the following:

1971-07 1
1989-08 10
1994-01 100
1997-08 1000
1999-05 2000
2000-12 3000
2001-10 4000
2002-04 5000
2003-10 10000
2005-01 15000
2008-04 25000
2009-10 30000
2012-06 40000
2015-09 50000
2017-06 55000
2019-07 60000
2021-04 65000
2023-02 70000
2024-12 75000

此作品已由其作者，Qef，釋出至公有領域。此授權條款在全世界均適用。 這可能在某些國家不合法，如果是的話： Qef授予任何人有權利使用此作品於任何用途，除受法律約束外，不受任何限制。