ETHNIC GROUPS. Rhode Island's black population numbered 46,908 in 2000, up from 39,000 in 1990 (and 4.5% of the state total). In 2004, 6.1% of the state's population was black. In 2000 there were 90,820 Hispanics and Latinos (8.7% of the total population), nearly twice the 1990 census count of 46,000.
This compares with an equivalent heating unit value for natural gas of $12.00 (at $1.20/therm); propane, $23.43 (at $2.14/gallon); kerosene $18.96 (at $2.56/gallon); wood pellets, $15.39 (at $254/ton); cord wood, $12.95 (at $285/cord) and electricity (electric baseboard), $38.10 to $55.69 (at 13-19 cents per kwh).
Propane is a gas that becomes liquid under moderate pressure. As a heating fuel, propane is stored in a pressurized tank and measured by the gallon. Typical costs: During the heating season (October to March), the federal Energy Information Administration publishes weekly average propane prices in the United States.