im trying to make my own consumer price index using the laspeyres index methology. However im having problems finding the individual prices. However i have the disaggregated cpi components. For example food is 252.61 in jan 2018 and base year is 1983 (that mean that the food component has increased the price about 2.53 times). So can i use this disaggregated index and multiply it by my own weights?