Country 2014 2015 2016
United States 47.15% 46.90% 48.64%
Mexico 27.34  27.14  27.93 
India 22.92  23.13  20.51 
Pakistan 18.15  23.44  22.43 
Indonesia 17.67  18.20  18.25 
China 17.14  17.27  17.69 
Average 25.06  26.01  25.91