transportation energy use oil is expected to remain the primary fuel source for throughout world and fuels are projected account almost 57 percent of total consumption by 2020 trends projections demand grow 2 5 per year from 1999 a higher pace than that forecast as whole table 24andfigure80 asaresult thetransportationsector s share rise slightly just over 21 economic expansion incomes increase businesses individualsdemandgreatermobilityforthemselvesand their products at regional level intensity defined here amount energyusedinthetransportationsectorperunitofgross domestic product gdp decline in all regions period figure 81 holding down some potential growth energydemandperunitofgdpisexpectedtofallby0 7 high prices tight markets characterized theworldenergyindustryin2000werereversedin2001 even before terrorist attacks september 11 2001 slowingeconomicgrowthandswitchingbacktonatural gasweremoderatinggrowthinoildemand 1 the2001 sector
