Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The economy of the US state of Colorado according to The Bureau of Economic Analysis gross state product estimates for 2008 was $ 248.6 billion. The Colorado economy ranked 20th largest in the United States in 2008. Per capita personal income in 2003 was $34,561, putting Colorado 8th in the nation. The state's economy broadened from its mid-19th century roots in mining when irrigated agriculture developed, and by the late 19th century, raising livestock had become important.