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World Development Report 1984

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Box 4.4 Alternative measures of fertility and mortality<br />

rud J.hI rti,h nrA d~ J,iIh r:,t.r p,-r t h.u t .*y nit, -r, n, -I i .-n,c p n.i inrm, bn I it r. I F-r nPI, t- LI.a -. ih, p r. .p.rr. r,r<br />

.r. I r r.I -itI.r, pi .., ,. ~ ni .i- .-I,V i ' .~ ~ rrtn .rt.l ir, ..4 *i-ir.r. .- 4 d,ti..r.-r.i .d ..-.n ~ I I- J t-,id a.> r, 1 4j4 . . h s been<br />

n i: pq7ur, Li I ,, .. Ith r,-I H ,<br />

r ,rul, ryr. - d, ni., ,rnvi--ri, tl-u. ir, I- i<br />

1.1I . t.-rti I,<br />

.: -ri. ir.: ~ .<br />

r3ir irn h t- k.. 1.p.<br />

F t-rr i m n..: i . ji,<br />

hj, :1in ni. F: d.1.. I1.p,n, :. -.nrrr'.3 in the<br />

I.,'r it.. dem ., ruckt :birth r3r.-s have<br />

.7,1 t-,rrh4 ind .1 r - i rh, h-,-. L-k~ ih- i..r I Iril .,rF,i Ii , *fp, t tiIr- 1- tha ri -tr rm iirrdIi r3t : in that<br />

1 . -. rd duiO ic- I Ii- r r-. t,. - r.,.I it t-irrrih - rth.h n- ~ -~ it p. d r-d rrd.:ri ui. .tvn.7~ -l-. in fer-<br />

rn-., .t,r- I, v -,; *r .- IhI pl.rp. .;c ir:- rh-, in1..I,ir-. i-, IF- rrb*.r * i r-. r,..b..r rr, t.,i, Id-t 1. r- .i --..plk. ih,: ame is<br />

r..iI 1 ril a 1.- I I-i 'nn:, ii t ,t . ul- d Li. -- ,<br />

~ d i. . I F F r. - 1 I-- n. i.,Irii. I h.. -rud.. death rate<br />

rIb., tlii! P.:ir,,r. - .v.i pmr,il.-ir.j IF..t .. il r 'u h,: th:r ri nd- I, !---l-r than the<br />

Fi-. -ri t i rir. 1-r. I l-F I.L, - r,rir ,-li ,ur. u-p r. 'h s urIrri , e r .-ud,- 1.-0, Fr,i-if -.ri. 1 4 versus 7.2<br />

iir ih. .uin , I th-: 1--ahrib ;i .p:i h.. I. d ,ii ,hil' r, n i sr r- ilh.- it. p- rrh..u,. rndi t:im mu.i-cause the<br />

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nir ri r rh<br />

.r.. -I r-nun -,t,i Ft L-.rti-m o.-., i-t.F,Ld L. it: iCr Tiruol,F . -F.I,s I, - . -r i,r,.. ic :r, t I.in lie Nether-<br />

,- n, hAd I h-, t,rtiliii. i ir. [ h- ni- Ji-rih rFin a F. - r udJ. it- i.r.rh I r-A I tF. P.. -* r, .ir Fin - . --<br />

r tIn~ r .. r-.r 1.: ' I lii. ti, I. . *i. i Ill t.: Ii, . I ti- i-prr du, r, _ . rr I .: 1 . -r, n I. rL,r r- rhu,<br />

,i ri.-I -i ii,- II rn-Fnt I,r i -l t *1 M. .r i..- Fr..up4 , ii r- iz r. nu[.. rtI r. tth l'-.<br />

r I-, i r . ri I I r<br />

~ J,iir ~r-'I.<br />

inin . ni, r I.- :,-1 h~.. h,Ti-n ri t h r n1ud r I h, I b--.1 nr m:nr-i<br />

time exr rII r. *.. .1 -,. r -~ r r.<br />

group or .h,.n,. r.1 J..b:. rd . I I iiFrr I>I.-,I..C-<br />

with only 20 to 25 percent in developed countries Colombia, for example, the working-age popula-<br />

(see Table 4.2). Although the proportion of old tion will increase from 15 million in 1980 to almost<br />

people is smaller in developing countries, the 25 million in 2000. In Bangladesh it will almost<br />

dependency ratio-the proportion of the popula- double, from 48 million to 84 million. The ecotion<br />

under fifteen and over sixty-four to those nomic implications of this growth are discussed in<br />

between ages fifteen and sixty-four-is on average the next chapter.<br />

higher. In Japan, for example, there are roughly In other age groups as well, population growth<br />

two people of working age to support one who is in developing countries will be higher than in<br />

either too old or too young to work; in Kenya, the developed countries. The number of people older<br />

ratio is less than one-to-one. Other things being than sixty-five will almost double between now<br />

equal, if income per worker were identical in Japan and 2000 in developing countries. In developed<br />

and Kenya, income per person in Japan would countries the number will increase by about a third<br />

nevertheless be at least 30 percent higher. Even (but by about 85 percent in Japan).<br />

within the sarm-e country there are comparable dif- 3.Nihrntna oriteainl"igtonfes<br />

ferences in age structure-and hence in depen- 3.a Neiuther iternopl nritration Higiiration<br />

alowh offersti<br />

dencyburdns-amng fmilie. Inurba<br />

Maharashtra state (India), about half the people in<br />

ral populationi increase account more for the rapid<br />

prut peeopncutre f iisi<br />

thndesrrl<br />

the poorest 10 percent of households are younger growth ofgcitieson. Develping couentriveshnde rural-ubnmga<br />

than fifteen; in the richest 20 percent, only one in urban migrlation. Despivte extnsivea arurasfl-urbancomiga<br />

five is younger than fifteen. tsian, populato grothiin ruer als aerceas of low-incomear<br />

The age structure in developing countries means Asia andseAfricalestillavernagesna2 peircetior more apear.<br />

that birth rates will remain high for some time Thepreent scaltempofay iontentionesal smigallpootion,bt per<br />

even if each mother has fewer children. It also inaet pouandtemo ary,dveopn consiutires asalpoprino<br />

means the number of young people entering the teppltoso eeoigcutis<br />

labor force will continue to increase for the next Cities in developing countries are growing at<br />

two decades. For countries where fertility began to almost twice the rate of overall populations (see<br />

fall in the mid-1960s, the rate of growth of the labor Table 4.3). More than half the increase is due to the<br />

force is now just starting to decline, though the balance of births over deaths; the rest is due to<br />

absolute number of new workers will continue to migration from rural areas and the reclassification<br />

increase until after the end of this century. In of rural areas to urban status. Historically, the<br />

66

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