274.Insum,underthelower-growth scenario andwithacontinuation ofthetypical relation between investment inwaterandsanitation andpercapita incomeand aggregate investment, only50percentofthepeopleinthedeveloping market economies wouldhavesafedrinking waterby1990and56percentbytheyear2000. Underthehigher-growth scenario, 60percentwouldhavesafedrinking waterbythe year2000.Similarly, withlowergrowthonly28percentofthe.population of thesecountries wouldhaveadequate sanitation by1990andonly34percent by2000.withhighergrowth, 40percentwouldhaveadequate sanitation bythe year2000. 275.Thedeveloping countries andtheinternational community thuswouldhaveto givemuchhigherpriority towaterandsanitation withinthetotalinvestment budgets projected evenwithhighergrowth, andextremely highpriority withinthe /...A/40/5l9 English Page124 limited totalinvestment projected underthelower-growth scenario, inorderto provide safedrinking waterandadeguate sanitation forallby1990orevenbythe year2000. Foradditional discussion ofproblems andprogress inmeeting thegoals oftheDecade, seedocuments E/C.7/l983/ll andA/40/l08-E/1985/49. 1/Distributed asdocument E/CN.5/l985/2, tobeissuedasaunitedNations publication. ~SeelLD,WorldLabourReport, vol.I,1984,p.7. l!The36leastdeveloped countries areAfghanistan, Bangladesh, Benin, Bhutan, Botswana, Burundi, CapeVerde,theCentral African Republic, Chad,Comoros, Democratic Yemen,Djibouti, Equatorial Guinea, Ethiopia, theGambia, Guinea, GUinea-Bissau, Haiti,theLaoPeople's Democratic Republic, Lesotho, Malawi, Maldives, Mali,Nepal,theNiger, Rwanda, Samoa, SaoTomeandPrincipe, Sierra Leone,Somalia, theSudan, Togo,uganda, theunitedRepublic ofTanzania, Burkina FasoandYemen. ifThethreeage-dependency ratiosaredefined asfollows: (a)the child-dependency ratioistheratioofthepopulation under15yearsofagetothe population between theagesof15to64yearsper1001(b)theaged-dependencY ratioistheratioofthepopulation 65yearsofageandovertothepopulation between theagesof15to64yearsperlOO,and(c)thetotal-dependency ratiois theratioofthecombined childpopulation under15yearsofageandtheadult population 65yearsandovertothepopulation between theagesof15to64years ofageper100. 2/GUyStanding, Labourforceparticipation anddevelopment (Geneva, International LabourOrganisation, 1978). ~N.Youssef, WOmen's employment andfertility: demographic transition or economic needsofmothers? (International CenterforResearch onWomen,1979),and R.Dixon,Ruralwomenatwork,strategies fordevelopment inSouthAsia (Baltimore, JohnsHopkins University press,1973). 21GUyStanding, "Women's workactivity andfertility", inDeterminants of fertility indeveloping countries, R.BUlatao andD.Lee,eds.(NewYork,Academic Press,1983),vol.I. ~E.Ware,"Women's workandfertility inAfrica", inThefertility of working women, Asynthesis ofinternational research, S.Kupinsky, ed.(NewYork, praeger Publishers, 1977)IandC.Oppong, "Family structure andwomen's reproductive andproductive roles: someconceptual andmethodological issues", in Women's rolesandpopulation trendsinthethirdworld, R.Anker, M.Buvinic and N.Youssef, eds.(London, CroomHelm,fortheInternational LabourOrganisation, 1982)• /...A/40/slg Engli sh Page 125 Notes (continued) "Direct econoRic costs and benefits of chilatrenn in Bulatao in Standing, ri{omen, s vrork and fertllityr, p. 525. Studies cited in Standing, I€bour forcep. I88; E. ware, Ioc. ci.t. r and R. L,"ffiii,oi.-2/and Lee, p/ \/J. cald$ell, op. cit. Studies cited structure and growthnl International Union for theNewsletter, 17 (.lanuary-April l9g3 ) .consequenceg scienti ficof popula tion si ze, study of popula tion,