Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water can help decrease tooth decay in the population. A concentration of $1$ ppm of fluorine is typically required to provide adequate amounts.

Calculate the number of kilograms of sodium fluoride needed per year for a city of $100,000$ people if the daily consumption of water per person is $139\mathrm{.}0$ gallons. $($Sodium fluoride is $45\mathrm{.}0$ percent fluorine by mass. $1$ gallon $=3\mathrm{.}79$ L; $1$ year $=365$ days; density of water $=1\mathrm{.}0$ g$/$mL$.)$