Year % of children ages 12-23 months 1986 70 1987 70 1988 70 1989 90 1990 90 1991 83 1992 83 1993 83 1994 83 1995 83 1996 83 1997 83 1998 81 1999 82 2000 82 2001 82 2002 82 2003 82 2004 82 2005 87 2006 87 2007 87 2008 92 2009 92 2010 92 2011 93 2012 93 2013 93 2014 94 2015 94 2016 94 2017 95 2018 95 2019 95 2020 97 2021 95 2022 96