Get the following quarterly series from the St. Louis Federal Reserve Bank FRED database from 2002 onwards:

- Real Personal Consumption Expenditures: Nondurable Goods

- Real Personal Consumption Expenditures: Durable Goods

- Real Personal Consumption Expenditures: Services

- Real Gross Domestic Product

These series are in levels (i.e. in dollars), so calculate their quarterly growth rate (percentage change from quarter to quarter) and plot each of the first three series separately against real GDP.

What features do you observe? How do they compare to aggregate consumption (Real Personal Consumption Expenditures)? From a firm's perspective, why are these patterns important?