  
<prompt> Trends in Vaccination Coverage | Percentage of children age 12-23 months | (1997 YDHCHS, All basic vaccinations, 28) (2006 YMICS, All basic vaccinations, 38) (2013 YNHDS, All basic vaccinations, 43) (1997 YDHCHS, No vaccinations, 12) (2006 YMICS, No vaccinations, 12) (2013 YNHDS, No vaccinations, 16) <response> The percentage of children age 12-23 months who have received all basic vaccinations increased from only 15 percent in 1997 to 15 percent in 2013.  