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Performance Profiles Tables 2006
Table B18.  Oil and Natural Gas Acreage for FRS Companies, 2000-2006
                      (Thousand Acres)
  2000 2001 2002 2003 2004 2005 2006
 Net Acreage              
  U.S. Onshore              
    Developed                                         31,760 34,332 37,103 36,721 38,287 38,702 39,682
    Undeveloped 37,657 43,293 40,280 42,891 39,891 44,631 48,650
  U.S. Offshore              
    Developed 5,383 5,881 5,281 5,375 5,520 5,106 4,544
    Undeveloped 21,483 20,933 21,929 20,875 22,006 20,917 18,755
  Foreign              
    Developed 32,535 32,903 37,603 33,952 33,561 34,990 36,572
    Undeveloped 416,941 424,465 429,394 312,769 273,697 300,277 291,292
Gross Acreage              
  U.S. Onshore              
    Developed 57,626 63,721 69,641 65,367 64,704 64,550 62,892
    Undeveloped 59,295 69,790 64,841 66,918 62,194 69,544 75,411
  U.S. Offshore              
    Developed 10,588 11,317 9,802 9,331 9,818 8,947 7,306
    Undeveloped 31,609 30,523 32,384 31,134 32,548 30,772 26,915
  Foreign              
    Developed 71,330 70,112 81,171 70,516 65,597 78,233 92,075
    Undeveloped 882,761 834,500 799,007 608,666 532,672 546,357 509,714
  Source: Energy Information Administration, Form EIA-28 (Financial Reporting System).