Down Jones and S&P 500 January changes

Well 2016 wasn't a good start for the stock market (Hence the name Down Jones in the title)! Someone asked me how the stock market had previously behaved in January, so I decided to make a few graphs.

We begin with Dow Jones. Yahoo Finance has for some unknown reason removed the option to download historical data for Dow Jones, so we have to limit ourselves to data from 1897 up to year 2012. And this is the result:

But you can still download historical data for S&P 500, so this is how S&P 500 behaved in January between 1950 and 2015: