Mexico’s exports totaled $90.8 billion in the first quarter, up 2.9 percent from the same period in 2013, the National Institute of Statistics and Geography, or INEGI, said. Oil accounted for $11.49 billion of the total, down 10.8 percent from the year-ago period, while non-petroleum exports came in at $79.37 billion, up 5.2 percent, compared to th…