Summary

DescriptionUS abortion by gestational age 2004 histogram.svg	English: Histogram of abortions by gestational age for the United States in 2004. Horizontal axis is weeks and vertical axis is thousands of abortions. Data is taken from the Centers for Disease Control and Prevention.[1] Updated version of Image:US abortion by gestational age 2002 histogram.svg, but data is almost identical.
Date	1 June 2009
Source	Own work   W3C-validity not checked. Plotted by hand because it would have taken just as long to learn a new plotting program.
Author	Omegatron
Other versions	US 2004 US 2002 UK 2004 US 2016

Data

Gest. week Abortions   weeks/bin   Abortions/week  /1000   Percent
<9 weeks   400197      8           50024.63        50.02   60.6%
9-10       112936      2           56468           56.47   17.1%
11-12      60323       2           30161.5         30.16   9.1% 
13-15      41517       3           13839           13.84   6.3%
16-20      24837       5           4967.4          4.97    3.8%
> 21       8365        19          440.26          0.44    1.3%

Guttmacher data is similar, not sure if it's from the same source:[2] archive copy at the Wayback Machine

<9 weeks 61.3%
9-10     17.8%
11-12    9.6%
13-15    6.7%
16-20    3.5%
>21      1.1%

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/3.0CC BY-SA 3.0 Creative Commons Attribution-Share Alike 3.0 truetrue

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

You may select the license of your choice.

(In short, this means that you can copy and modify the image freely as long as you provide attribution; preferably in the form of a link back to this page.)