U.S. Airline Passengers,, (Millions),, Date,De-seasonalized,Actual Jan-99,54.347704,47.831934 Feb-99,54.283221,46.891021 Mar-99,54.296768,57.596914 Apr-99,54.789466,55.614829 May-99,54.039672,55.714159 Jun-99,54.752316,59.05009 Jul-99,55.674763,62.646634 Aug-99,55.514252,61.010854 Sep-99,56.214664,51.821993 Oct-99,56.792336,56.843256 Nov-99,57.156509,54.807563 Dec-99,55.389053,52.978477 Jan-00,54.847214,48.192279 Feb-00,56.401734,50.30986 Mar-00,57.652662,60.898713 Apr-00,57.12308,57.869166 May-00,58.499815,60.271571 Jun-00,58.013693,63.290596 Jul-00,57.931634,64.764785 Aug-00,57.944005,63.474393 Sep-00,58.933488,53.967989 Oct-00,58.456564,58.41783 Nov-00,58.851537,56.713029 Dec-00,57.316333,54.326067 1-Jan,57.881267,51.338126 1-Feb,57.270908,49.764935 1-Mar,57.539763,61.122956 1-Apr,57.671306,58.443773 1-May,56.787317,58.813301 1-Jun,56.686542,61.840722 1-Jul,57.397208,64.790104 1-Aug,59.697621,65.383388 1-Sep,41.719745,35.817879 1-Oct,45.742626,45.316301 1-Nov,47.453869,46.030011 1-Dec,50.156561,46.96655 2-Jan,50.810778,44.684864 2-Feb,51.891239,44.303985 2-Mar,51.546902,55.715925 2-Apr,51.979799,52.015969 2-May,52.088885,53.992822 2-Jun,51.633094,56.686334 2-Jul,51.908933,59.254222 2-Aug,53.280757,59.464904 2-Sep,52.867595,46.531925 2-Oct,54.860794,54.607827 2-Nov,55.390053,51.040508 2-Dec,56.722547,56.568936 3-Jan,55.585382,49.574734 3-Feb,54.691744,47.058238 3-Mar,53.662108,56.841769 3-Apr,52.64047,53.039164 3-May,53.403198,55.412745 3-Jun,54.303002,59.428402 3-Jul,56.132477,63.882573 3-Aug,55.913234,62.176201 3-Sep,57.13901,50.561139 3-Oct,56.73902,56.510348 3-Nov,57.5549,53.459214 3-Dec,57.525461,56.843945 4-Jan,56.367649,50.611613 4-Feb,58.326524,51.759121 4-Mar,58.633257,61.78299 4-Apr,59.806504,60.691662 4-May,59.206561,60.600293 4-Jun,60.416343,65.360812 4-Jul,60.680122,68.881935 4-Aug,60.510303,66.385777 4-Sep,60.891006,54.600451 4-Oct,61.626546,61.366935 4-Nov,61.477392,58.633133 4-Dec,61.537399,60.275076 5-Jan,62.036177,55.68348 5-Feb,61.847147,53.990079 5-Mar,63.479737,67.711333 5-Apr,63.241464,62.967731 5-May,64.052639,65.696281 5-Jun,63.706137,68.681799 5-Jul,63.696949,71.701132 "Note: These graphs present both actual data, and data that have been seasonally adjusted in order to clarify the trends over time. The data cited in the text represent actual (unadjusted) values.",, "Source: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Nov. 21, 2005.",,