This chart depicts the trend--generally an upward growth trend--in real per capita gross state product in Texas. Per capita gross state product measures the value of a state's total economic output per person. For purposes of the comparison, the chart also depicts the trend in average per capita gross state product across the rest of the states. Driven by oil, the Texas economy until the mid 1980s went through periods of boom and bust. Those fluctuations have decreased as the Texas economy diversified following the oil crash of the late 1980s. As a rough indicator of the downward trend in oil production the chart depicts the share of Texas gross state product in constant 2000 dollars produced from oil and gas extraction. The oil and gas industry in Texas is by no means completely tapped out, but is not the economic behemoth in the state that it once was.