"U.S. Bureau of the Census, International Data Base"
 
"Table 004. Enumerated and Adjusted Census Population by Age,Sex,Urban/Rural Res"
"----------------","---------------","---------------","---------------"
"Country or area/"," "," "," "
"Year/ ","  "," "," "
"Res/ "," "," "," "
"Type/ "," "," "," "
"Age "," Both sexes"," Male"," Female"
"----------------","---------------","---------------","---------------"
"Northern Mariana Islands/1980/Total/Enu"
 
"Total, all ages ", 16780, 8817, 7963
" 0- 4 ", 2464, 1274, 1190
" 5- 9 ", 2148, 1040, 1108
" 10-14 ", 2193, 1119, 1074
" 15-19 ", 1703, 842, 861
" 20-24 ", 1512, 709,  803
" 25-29 ", 1463, 753, 710
" 30-34 ", 1303, 743, 560
" 35-39 ", 864, 520, 344
" 40-44 ", 824,  520, 304
" 45-49 ", 660, 404, 256
" 50-54 ", 496, 315, 181
" 55-59 ", 388, 225, 163
" 60-64 ",  267, 125, 142
" 65-69 ", 228, 119, 109
" 70-74 ", 139, 65, 74
" 75+ ", 128, 44, 84
 
"Northern Mariana Islands/1986/Total/Enu"
 
"Total, all ages ", 20855, 10858, 9997
" 0 ", 918, 494, 424
" 1- 4 ", 2927, 1525, 1402
" 5- 9  ", 2651, 1325, 1326
" 10-14 ", 2286, 1123, 1163
" 15-19 ", 2141, 1084, 1057
" 20-24 ", 1801, 891, 910
" 25-29 ", 1528, 719, 809
" 30-34 ", 1521, 774, 747
" 35-39 ", 1289, 714, 575
" 40-44 ", 958, 569,  389
" 45-49 ", 797, 487, 310
" 50-54 ", 649, 397, 252
" 55-59 ", 492, 311, 181
" 60-64 ", 337,  198, 139
" 65-69 ", 246, 122, 124
" 70-74 ", 177, 82, 95
" 75-79 ", 54, 25, 29
" 80-84 ",  22, 10, 12
" 85+ ", 61, 8, 53
"----------------","---------------","---------------","---------------"
"Source: U.S. Bureau of the Census, International" 
" Data Base."