Sorted by January 2015 column.
Marketshare in January 2012:
Nintendo: 36%
Microsoft: 31%
Sony: 21%
PC: 11%
Marketshare in January 2015:
Microsoft: 42%
Sony: 41%
Nintendo: 13%
PC: 5%
Note: Percentages don't add to 100% because of rounding.
Although overall Sony might have closed the gap between it and MS but i think MS has managed to stop the freefall of XBO and the difference between XBOS4 which was near 1:1.3 is now 1:1.1