Year	% of children ages 12-23 months
1980	27.090857809934096
1981	28.35066542388209
1982	35.26571994382264
1983	36.89925256391053
1984	44.81374394640494
1985	62.6390528877859
1986	68.95029641641476
1987	70.80630862306236
1988	81.67154715013682
1989	85.0262571612019
1990	87.77022600100037
1991	81.37574654567398
1992	84.37755928163078
1993	85.37545524656711
1994	83.28583411166112
1995	86.25427552837712
1996	87.19313826218605
1997	86.10083215451539
1998	88.80419685012252
1999	89.83001351158237
2000	90.99081152113891
2001	91.02808248105252
2002	89.51086165471291
2003	88.9929480748833
2004	89.95830117313798
2005	89.44066875087495
2006	89.69777423462321
2007	89.78129311487136
2008	90.9367388833797
2009	92.02673945515325
2010	91.62292509279258
2011	91.0147459166364
2012	87.38043724996173
2013	88.93913848922112
2014	88.72364320139278
2015	87.82938355509427
2016	88.94864987765929
2017	89.96935143895257
2018	89.9582296074835
2019	90.20428089607671
2020	87.27404186045334
2021	87.60479970750103
2022	89.41441361999354