The vulnerability and dependence on food price increases is higher for the lower income deciles. Medical schools split their year groups into one of 10 deciles. The deciles were last revised using information from the 2006 Census. The deciles were last revised using information from the 2006 census. The deciles were last revised using information from the 2013 Census. School deciles listed from www.tki.org.nz and www.parliament.govt.nz. The previous deciles came into force in 2008 following the 2006 census. For deciles, ten related colors must be selected.