Will you be doing this for 2013 - 2016 as well?
Do you have a link(s) to NPD figures for those years? I've only been doing the hardware figures since earlier this year.
2016 numbers http://gamrconnect.vgchartz.com/thread.php?id=230334&page=1#68
Boutros's NPD threads also have numbers. Just work back from this thread http://gamrconnect.vgchartz.com/thread.php?id=212380
Also, PS4 LTD Updates. After the | are VGC's numbers up to that week.
2.1M as of December 1st, 2013 | 2,133,547 (Basically spot on)
4.2M as of December 28th, 2013 | 4,193,840 (Could increase it to hit 4.2M)
5.3M as of February 8th, 2014 | 5,419,498 (Over 119K)
6.0M as of March 2nd, 2014 | 6,251,669 (Over 250K)
7.0M as of April 6th, 2014 | 7,194,368 (Over 194K)
10.0M as of August 10th, 2014 | 9,983,454 (Under 17K)
18.5M as of January 4th, 2015 | 19,085,306 (Over 585K)
20.2M as of March 1st. 2015 | 20,734,584 (Over 535K)
30.2M as of November 22nd, 2015 | 30,568,994 (Over 369K)
35.9M as of January 3rd, 2016 | 36,667,145 (Over 767K)
40.0M as of May 22nd, 2016 | 41,637,203 (Over 1637K)
50.0M as of December 6th, 2016 | 50,637,094 (Over +637K as December 6th was 3 days into the week after December 3rd)
53.4M as of January 1st, 2017 | 54,603,006 (Over 1203K)
60.4M as of June 11th, 2017 | 61,566,917 (Over 1167K)