What's caused Mexican stock prices to pick up?

Here's a very interesting graph from CNNMoney, courtesy of EPFR Global. For the first week this year, the end of the first quarter saw investors put money into emerging market stock funds. Do you think it's coincidental that Mexico's stock index, the IPC, picked up 1.8% in dollars between March 28 and April 4 (+1.4% in pesos)? In that same week, the Dow rose 0.6%, the S&P 500, 0.4%, and the Nasdaq fell 0.7%. That the IPC outperformed the US indices has been a very rare occurrence this year.

Source: http://money.cnn.com/2014/04/14/investing/emerging-markets/index.html?iid=HP_LN