1969

1980

1990

2000

2012

Oklahoma Nominal PCI

$3329

$9578

$16,177

$24,802

$40,620

U.S. Nominal PCI

$3930

$10,150

$19,584

$30,587

$43,735

Oklahoma/U.S. PCI Ratio

0.847

0.944

0.826

0.811

0.929