According to this page, it changed to 2.25% effective July 2010, not that long ago. Other related changes since 1990 also listed.
http://energyalmanac.ca.gov/gasoline/gasoline_taxes.html
Other related changes since 1990 also listed.
California statewide sales tax is 7.25%...looks like a typo on the graphic. California charges this sales tax on the total with Federal & other CA taxes...so they are “taxing a tax”! Also, there are county/city “add-ons” to the sales tax, Fresno Co. (home of FR) has a sales tax rate of 7.975%.
http://www.boe.ca.gov/sutax/pam71.htm