States report data to the Adoption and Foster Care Analysis and Reporting System (AFCARS) about children in foster care and children who are adopted from foster care.  According to the most recent AFCARS Report (http://www.acf.hhs.gov/programs/cb/stats_research/afcars/tar/report14.htm), approximately 42 percent of the children in foster care on September 30, 2006 had been in care for less than one year, 22 percent had been in care for 1 - 2 years, 12 per cent had been in care for 2 - 3 years, 11 per cent had been in care for three - four years, and 13 percent had been in care for five years or more.