Breakdown of fuel purchases and of other supplies Employed personnel Total Fuels Total 70,986 Fuels Less than 2 19,172 Fuels From 2 to 4 9,579 Fuels From 5 to 19 27,326 Fuels From 20 to 99 7,700 Fuels More than 99 years 7,209 Electricity and gas as a means of propulsion Total 2,490 Electricity and gas as a means of propulsion Less than 2 6 Electricity and gas as a means of propulsion From 2 to 4 116 Electricity and gas as a means of propulsion From 5 to 19 440 Electricity and gas as a means of propulsion From 20 to 99 200 Electricity and gas as a means of propulsion More than 99 years 1,728 Other purchases Total 45,311 Other purchases Less than 2 2,103 Other purchases From 2 to 4 2,412 Other purchases From 5 to 19 9,466 Other purchases From 20 to 99 4,177 Other purchases More than 99 years 27,152