## World population growth data  at year multiples of 200.
##
## Column1: years A.D.
## Column2: estimated world population in millions
##
## Data points from http://www.census.gov/ipc/www/worldhis.html
## and
## http://www.un.org/esa/population/publications/sixbillion/sixbilpart1.pdf
##
## The population data is taken from the 'lower' estimates column of
## that 1st web page --- column 2 on that page (1AD to 1950).
## Data for years between 1960 and 1999 are from the un.org PDF file.
##
## The Black Plague occurred around 1300-1400, where there is a dip in the estimates.
##
0 170
200 190
600 200
800 220
1000 254
1200 360
1400 350
1600 545
1800 813
2000 6000