Table 1.

Number and percentage of linked records by year, Brazil, 2001-2015

Year	Total	Linked
		N	%
2001	2,448,609	961,605	39.27
2002	2,319,071	1,175,223	50.68
2003	2,224,872	1,179,781	53.03
2004	2,165,661	1,144,809	52.86
2005	2,161,484	1,183,292	54.74
2006	2,050,534	1,271,179	61.99
2007	1,961,446	1,087,254	55.43
2008	1,936,675	1,077,781	55.65
2009	1,855,919	1,052,394	56.70
2010	1,778,515	1,067,417	60.02
2011*	1,765,211	1,249,492	70.78
2012	1,662,414	1,251,251	75.27
2013	1,505,476	1,227,162	81.51
2014	1,271,156	1,043,499	82.09
2015	592,848	475,275	80.17
Total	27,699,891	16,447,414	59.38

*from 2011 the maternal date of birth was available