The inflation rate is expressed as a percentage increase in average prices over a year. For example, if the cost of the CPI "basket" rises from $100 one year ago to $102 today, the current inflation rate is 2 per cent. When the CPI rises, the purchasing power of the average consumer's dollar falls.<ref> | The inflation rate is expressed as a percentage increase in average prices over a year. For example, if the cost of the CPI "basket" rises from $100 one year ago to $102 today, the current inflation rate is 2 per cent. When the CPI rises, the purchasing power of the average consumer's dollar falls.<ref> |