 The improvements in income before income taxes and return on revenues for both domestic and foreign operations  were primarily due to a higher return on revenues in truck operations. PACCAR’s Truck segment accounted for 90% and 86% of revenues in 2010 and 2009, respectively. * Percentage not meaningful PACCAR’s worldwide truck sales and revenues increased to $9.24 billion in 2010 from $6.99 billion in 2009 due to  higher market demand in all markets attributable to improving global economic conditions.  Truck segment income before income taxes increased to $501.0 million in 2010 from $25.9 million in 2009 from  higher truck unit and aftermarket parts sales and margins in all markets, partially offset by increased R&D and  higher SG&A spending. 2010 truck income before income taxes was also affected by the translation of stronger  foreign currencies, primarily the Canadian and Australian dollars offset by a weaker euro and British pound. The  translation effect of all currencies increased 2010 income before income taxes by $15.1 million compared to 2009. The Company’s new truck deliveries are summarized below: In the U.S. and Canada, 2010 net sales and revenues increased to $4.42 billion from $3.57 billion in 2009. Industry  retail sales in the heavy-duty market in U.S. and Canada increased 17% to 126,000 units in 2010 compared to  108,000 units in 2009. The Company’s market share was 24.1% in 2010 and 25.1% in 2009. The medium-duty  market was 41,000 units in 2010 and 2009. The Company’s medium-duty market share was 13.5% in 2010  compared to 15.9% in 2009. In Europe, 2010 net sales and revenues increased to $3.19 billion from $2.52 billion in 2009. The 15-tonne and  above truck market in Western and Central Europe was 183,000 units compared to 168,000 units in 2009. The  Company’s market share was 15.2% in 2010 compared to 14.8% in 2009. DAF market share in the 6- to 15-tonne  market in 2010 was 7.7%, compared to 9.3% in 2009. The 6- to 15-tonne market in 2010 was 51,000 units,  comparable to 2009. Net sales and revenues in Mexico, Australia and other countries outside the Company’s primary markets increased  to $1.63 billion in 2010 from $.91 billion in 2009 primarily due to higher sales from new truck deliveries in Mexico  ($.44 billion) and Australia ($.19 billion) reflecting higher market demand.  Year ended December 31, 2010 2009  %  CHANGE United States  29,100 28,300 3 Canada  6,100 4,400 39 U.S. and Canada  35,200 32,700 8 Europe  31,200 22,200 41 Mexico, Australia and other  12,400 6,100 103 Total units  78,800 61,000 29 ($ in millions) Year ended December 31, 2010 2009 %  CHANGE Truck net sales and revenues: U.S. and Canada  $4,419.2  $ 3,566.0 24 Europe  3,190.2  2,520.2 27 Mexico, Australia and other  1,627.9 907.8 79 $9,237.3  $ 6,994.0 32 Truck income before income taxes  $ 501.0  $  25.9 * 2010 Compared to 2009: Truck