21Jan197122Jan197124Jan197101Feb197118Feb197119Feb197120Feb197121Feb197123Feb197124Feb197103Mar197105Mar197113Mar197114Mar197117Mar197118Mar197120Mar197121Mar197124Mar197104Apr197105Apr197106Apr197107Apr197108Apr197110Apr197112Apr197113Apr197114Apr197115Apr197117Apr197118Apr197121Apr197122Apr197124Apr197125Apr197126Apr197127Apr197128Apr197129Apr197129May197130May197121Jun197102Jul197131Jul197104Aug197105Aug197106Aug197107Aug197114Aug197115Aug197121Aug197123Aug197124Aug197126Aug197119Oct197121Oct197122Oct197123Oct197124Oct197126Oct197127Oct197129Oct197130Oct197131Oct197106Nov197107Nov197111Nov197112Nov197114Nov197115Nov197117Nov197120Nov197101Dec197102Dec197104Dec197105Dec197106Dec197107Dec197109Dec197110Dec197114Dec197115Dec197131Dec1971