 Since 1996, the United Kingdom has also tracked a Consumer Price Index figure, and in December 2003, the inflation target was changed to CPI of 2%, from the previous target of RPIX of 2.5%.The Consumer Prices Index including owner occupiers’ housing costs (CPIH) became the lead inflation index in UK official inflation statistics on 21 March 2017.The CPI calculates the average price increase as a percentage for a basket of 700 different goods and services.