Year	% of children ages 12-23 months
1980	1.4487855227910102
1981	3.456919605019292
1982	4.720411266490075
1983	5.471440205517132
1984	10.680760960037347
1985	16.37493274777906
1986	24.038748121906174
1987	29.431343679267922
1988	34.778792670107485
1989	42.97449798924354
1990	51.272454533909766
1991	41.4113542225247
1992	43.53166412310588
1993	38.01579459711851
1994	44.89117359793894
1995	41.77602606347452
1996	37.759356865038356
1997	35.001409105541036
1998	40.394833393980655
1999	41.516400133716324
2000	43.293695278821204
2001	42.6322920537783
2002	43.59483623358649
2003	47.32351391766611
2004	50.37304300239644
2005	54.023279691575446
2006	57.35222119778975
2007	59.40994794506479
2008	64.61773594132563
2009	69.69336643444494
2010	66.2153718809342
2011	62.40396075091288
2012	61.12644505171857
2013	60.67361888758424
2014	60.97022828072713
2015	60.55720690933832
2016	66.23745879076117
2017	67.70457585168796
2018	69.79185443966804
2019	72.2573441171885
2020	69.20086430834756
2021	70.10026679045423
2022	70.5130653426548