Year	% of children ages 12-23 months
1980	7.454126540259763
1981	9.302601026672233
1982	10.072322398717345
1983	31.78836628338799
1984	36.1171310924827
1985	41.92444947655777
1986	41.975707824281905
1987	50.99871011774347
1988	61.635703591270705
1989	67.38608322354895
1990	73.65379618426378
1991	69.79442885536201
1992	70.67409721974859
1993	70.93741335287774
1994	72.00450754473981
1995	74.77887915218751
1996	74.27465400227125
1997	71.93629618330189
1998	71.49867865353261
1999	72.12413361787807
2000	72.23805485037971
2001	72.97561799279305
2002	72.12321677886005
2003	73.62125810417542
2004	75.58203673430077
2005	77.03886172782936
2006	78.91960762857164
2007	79.3299806136443
2008	81.2342982934179
2009	84.09588557017383
2010	84.77911452864647
2011	85.2388016593628
2012	84.97289484870475
2013	85.38814760220221
2014	85.81358896508418
2015	86.38075783169981
2016	86.92564328003307
2017	87.09456336176446
2018	88.61346346284337
2019	88.32325890332099
2020	85.54979402606745
2021	83.80039692382242
2022	86.35749862936345