"Figure 11.3: Median net income for single pensioners: by income quintile, 1998-01 and 2008-11","" "Great Britain/United Kingdom","" "","" "Notes","1. The median of a distribution is the value below which 50 per cent of the values lie when the data is arranged in ascending order from the lowest to the highest value 2. Income quintiles are calculated on net income before housing costs; they are calculated separately for pensioner couples and single pensioners 3. The Data before 2002/03 is for Great Britain. Data for 2002/03 onwards in for the United Kingdom 4. The 2010/11 constant price series is calculated using the Retail Price Index (RPI), excluding Council Tax 5. Quintiles divide the data, ranked in ascending order, into five equal parts – from pensioners with the lowest incomes in the bottom quintile group to those with the highest incomes in the top quintile group Figures are presented in the form of three-year averages because results may be volatile from one year to the next" "Unit","£ per week at 2010/11 prices" "","" "Single pensioners","1998-01","2008-11" "Bottom","102","129" "Second","142","180" "Third","170","224" "Fourth","214","280" "Top","316","391"