Here is some info that might help from the web:
From NBC News:
"MEXICO CITY — Sunbathers stretch out along white beach after white beach on the sweltering Caribbean coast. Tequila-swigging revelers pack the glittering nightclubs wall to wall. Surfers carve up the Pacific waves.
Yup, that sounds like Mexico all right — but it’s actually been a summer like no other.
As the season draws to an end, officials here are boasting a bumper season in the country’s top resorts, including Puerto Vallarta, Los Cabos and Cancun, where hotels have been packed to the highest levels ever.
The total number of tourists in Mexico hit a record in the first half of the year, with more than 14 million foreigners touching down, almost 20 percent more compared to last year, the Tourism Department said.
The spike in visitors, especially Americans, comes after several years of stagnation in the travel sector here amid a slow global economic recovery and fears of gory cartel violence."
And this: From Trading Economics
Mexico Tourist Arrivals 1960-2015 | Data | Chart | Calendar | Forecast
Tourist Arrivals in Mexico decreased to 1424.09 Thousand in April of 2015 from 1710.19 Thousand in March of 2015. Tourist Arrivals in Mexico averaged 566.52 Thousand from 1960 until 2015, reaching an all time high of 1952.56 Thousand in December of 2014 and a record low of 56.59 Thousand in May of 1962. Tourist Arrivals in Mexico is reported by the Banco de Mexico.
Go to this site and look at the chart:
http://www.tradingeconomics.com/mexico/tourist-arrivals
Hope this helps.