6.52 Australia's ERP and estimates of NOM include all people, regardless of nationality or citizenship, who usually live in Australia, with the exception of foreign diplomatic personnel and their families. Therefore, foreign diplomatic personnel and their families are considered out of scope and were removed from NOM estimates. The previous methodology for estimating NOM was unable to exclude diplomatic personnel and their families. However, with the improved NOM methodology, refinements to the NOM processing system have enabled this to occur through the use of visa information. All diplomatic personnel and their families will be excluded from new NOM estimates with the September quarter 2008 release of Australian Demographic Statistics (cat. no. 3101.0) on the 18 March 2009 for the reference period September quarter 2006 and onwards.