Perfect Population Projections Inc. (PPP) has entered into a contract with the city of Popular, Pennsylvania, to project the future population of the city. In recent years, Popular has become a desirable place to live and work, as indicated by the table on the next page. The contract states that PPP must project Popular's population for the year 2018 using both a simple linear method and an economic base analysis. The ratio of population to total employment is 2.0833.

Year	Total Population	Total Employment	Basic Employment	Nonbasic Employment
2013	50,000	25,000	6,250	18,750
2014	53,000	26,500	6,625	19,875
2015	57,000	28,500	7,125	21,375
2016	65,000	32,500	8,125	24,375
2017	70,000	35,000	8,750	26,250
2018	?	?	9,000	?