Yes they did. You may also want to consider the Alaskan fiscal calendar is not the same as the SEC.
..the State of Alaska's fiscal year, which is July 1 through June 30
http://www.commerce.state.ak.us/dca/logon/finmgt/finmgt-budget.htm
A six month slide from Jan 2011 to July 2010 makes quite a dollar difference in oil.
Jan 2011 = $83.68
July 2010 = $68.51
http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=F005071__3&f=M
In calendar year 2010, CP reported their AK sales price at $78.61/barrel and their taxes paid at $17.65 barrel. That's 22.5% for AK's take of CP's oil.