Year % of children ages 12-23 months 1980 86.35863329309035 1981 86.45665787409044 1982 86.55282457839346 1983 87.48846826831932 1984 87.47020030224509 1985 86.6189860168582 1986 87.6896236262968 1987 95.86429668714509 1988 95.9647496261702 1989 93.34452107963395 1990 89.81251959092928 1991 86.18818032827558 1992 83.56174649303857 1993 88.18564430163586 1994 93.90779837674891 1995 94.2652055189003 1996 94.54096631052498 1997 95.09510445682702 1998 95.47665744521346 1999 95.49499766436786 2000 93.58757805170711 2001 93.59858227330731 2002 93.53418505434703 2003 95.61543536829832 2004 95.61164060226724 2005 95.76462845211283 2006 95.92100379801745 2007 95.84074719048051 2008 95.67509554109505 2009 94.6645862481352 2010 94.4829747824899 2011 95.21828388455856 2012 93.7396719428428 2013 93.73861984248407 2014 94.64964650306275 2015 94.64929462526679 2016 94.6493692098322 2017 93.73663453970335 2018 93.7357259397004 2019 93.73388272183847 2020 92.91057140551814 2021 93.81765731170687 2022 93.81507400373916