Table 3. Calculation of Reference Population (for Table 2).

Year of birth	Boy	Girl	Boy + girl
2011	231,954	219,625	451,579
2012	238,639	225,735	464,374
2013	216,177	205,288	421,465
2014	215,277	204,556	419,833
2015	217,775	206,788	424,563
Total	1,119,822	1,061,992	2,181,814*

^*Reference population = total children born from 2011 to 2015 = 2,181,814.