Year	% of children ages 12-23 months
1980	7.671848502438686
1981	14.859333462399837
1982	16.016066431307962
1983	18.468850734811415
1984	20.52555336657424
1985	25.333476820267396
1986	30.62787833625704
1987	37.36450833481902
1988	40.95887216541477
1989	46.32350287523368
1990	51.78224140679624
1991	45.04317983567559
1992	44.926949449766504
1993	47.9379368400866
1994	50.570575520131456
1995	52.25986936605018
1996	51.86767554198135
1997	51.06137614330738
1998	48.987084374754616
1999	49.47216119433058
2000	53.34426019884143
2001	54.72333764891017
2002	56.998923732410844
2003	61.28692061467525
2004	64.67799849404399
2005	68.14338362280417
2006	69.49244325052447
2007	71.4929849911737
2008	72.56464094761759
2009	74.4415265364884
2010	74.71261402380702
2011	76.3206209116086
2012	76.81249664015724
2013	75.7554074559956
2014	77.08227755643163
2015	77.05784175699614
2016	77.9658771705627
2017	78.48731022298733
2018	78.28337694042794
2019	78.50548273545559
2020	76.31498959833611
2021	73.62921819851793
2022	74.20154556584423