Date,On-time Performance (percent),,,, May-03,76.3,,,, Jun-03,71.5,,,, Jul-03,69.4,,,, Aug-03,69.8,,,, Sep-03,75.1,,,, Oct-03,73.9,,,, Nov-03,75.3,,,, Dec-03,73.4,,,, Jan-04,69.3,,,, Feb-04,73.2,,,, Mar-04,74.3,,,, Apr-04,71.6,,,, May-04,70.4,,,, Jun-04,64.4,,,, Jul-04,63.0,,,, Aug-04,66.7 Sep-04,72.8 Oct-04,76.0 Nov-04,70.6 Dec-04,71.3 Jan-05,68.8 Feb-05,73.9 Mar-05,73.2 Apr-05,68.8 May-05,70.0