The Office for National Statistics (ONS) updates the basket each year so the contents accurately reflect current trends in spending.
The basket contains 700 items, with 180,000 individual prices collected each month.
“Tablets have been added as they represent a significant and growing market,” the ONS said.
“However, charges for developing and printing colour film are being removed as the popularity of digital cameras means fewer and fewer people are using analogue cameras,” the ONS added.
The basket of goods is not changed just because spending on individual items has fallen or risen. Changes are made to broaden or widen the coverage of a particular group of items.
So pineapples are in this year, to give more varied coverage of volatile price movements for fruit and vegetables.
Other categories have been changed simply to make them more representative.
Hot oat cereals are in to broaden the category of bread and cereals; continental soft cheese has been added to the milk, cheese and eggs category; and cans of stout have been added to widen the range of beers in the basket.
In addition, the costs of vehicle excise duty, TV licences and trade union and professional subscriptions, which are used to work out the RPI, will now also be used to calculate the CPI, in line with European statistical standards.