13-11 Efficiency of Energy Conversion
%
Year	Total Efficiency	Electricity Generation	Heating	Coking	Petroleum Refining
1980	73.9	21.2		72.0	96.9
1985	74.9	21.1		75.5	98.1
1990	73.9	20.9	69.4	85.5	98.0
1991	73.9	22.4	60.7	81.3	98.1
1992	73.5	24.4	60.5	83.6	95.4
1993	73.3	22.7	49.9	90.0	94.2
1994	74.0	24.8	49.9	80.8	95.9
1995	72.7	23.6	71.2	78.6	96.6
1996	71.0	24.3	57.0	79.5	94.5
1997	70.6	22.9	54.7	90.0	95.5
1998	71.9	23.6	58.8	94.8	95.9
1999	72.3	25.4	69.8	92.2	94.0
2000	73.6	26.6	75.0	89.4	94.7
2001	73.7	26.1	74.6	78.2	97.4
2002	73.6	26.8	73.5	83.4	96.8