Table 1.

Prevalence of sialolithiasis by gender.

Year	Total			Male			Female
	N	No. of Sialolithiasis	P	N	No. of Sialolithiasis	P	N	No. of Sialolithiasis	P	Sex ratio
1996	21,525,433	380	1.8	11,065,798	198	1.8	10,459,635	181	1.7	1.1
1997	21,742,815	502	2.3	11,163,764	248	2.2	10,579,051	253	2.4	1.0
1998	21,928,591	507	2.3	11,243,408	270	2.4	10,685,183	237	2.2	1.1
1999	22,092,387	355	1.6	11,312,728	179	1.6	10,779,659	176	1.6	1.0
2000	22,276,672	336	1.5	11,392,050	200	1.8	10,884,622	135	1.2	1.5
2001	22,405,568	376	1.7	11,441,651	215	1.9	10,963,917	158	1.4	1.4
2002	22,520,776	370	1.6	11,485,409	221	1.9	11,035,367	148	1.3	1.5
2003	22,604,550	327	1.4	11,515,062	160	1.4	11,089,488	166	1.5	1.0
2004	22,689,122	348	1.5	11,541,585	192	1.7	11,147,537	156	1.4	1.2
2005	22,770,383	372	1.6	11,562,440	199	1.7	11,207,943	173	1.5	1.2
2006	22,876,527	447	2.0	11,591,707	236	2.0	11,284,820	211	1.9	1.1
2007	22,958,360	396	1.7	11,608,767	196	1.7	11,349,593	200	1.8	1.0
2008	23,037,031	417	1.8	11,626,351	229	2.0	11,410,680	188	1.6	1.2
2009	23,119,772	443	1.9	11,636,734	221	1.9	11,483,038	222	1.9	1.0
2010	23,162,123	433	1.9	11,635,225	220	1.9	11,526,898	213	1.8	1.0
2011	23,224,912	460	2.0	11,645,674	225	1.9	11,579,238	235	2.0	1.0
2012	23,315,822	474	2.0	11,673,319	261	2.2	11,642,503	213	1.8	1.2
2013	23,373,517	470	2.0	11,684,674	245	2.1	11,688,843	225	1.9	1.1

P: prevalence rate per 100,000 population.