(preliminary notes on energy consumption and population growth 1880-2003 - Róbinson Rojas)
Table 1
year	Energy consumption - Mtoe (EC)1	World population - Million (WP)2	EC/WP3	
1880	200	1480	0.14	
1945	1300	2350	0.55	
1965	3861	3346	1.15	
1975	5775	4086	1.41	
1985	7193	4851	1.48	
1995	8534	5691	1.50	
2000	9060	6079	1.49	
2003	9741	6299	1.55	
1)	1965-2003 from "BP Statistical Review of World Energy 2004", Full report and history series, available in http://www.rrojasdatabank.org/dev1000.htm.
Data for 1880 and 1945, taken from Jean-Marc Jancovici data in http://www.manicore.com/anglais/documentation_a/greenhouse/energy_consumption.html
2)	Data from U.S. Census Bureau, Total Midyear Population for the World 1920-2050 (http://www.census.gov/ipc/www/worldpop.html), and Historical Estimates of World Population (http://www.census.gov/ipc/www/worldhis.html)
3)	Because energy consumption is expressed in million ton of oil equivalent and population in million it is analytically valid to use the ratio EC/WP to describe patterns over time. (RR)
4)	From the above table:
Period	Energy consumption - average annual growth (%)	World population - average annual growth (%)	
1880-2003	3.21	1.18	
1880-1945	2.92	0.71	
1945-1975	5.09	1.86	
1975-1985	2.22	1.73	
1985-2003	1.70	1.46	
1975-2003	1.88	1.56	
1945-2003	3.53	1.71	
(the pattern is obvious related to productivity and  the technical momentum of energy consumption….RR)(chart 1 with table 1 figures)

Chart1

Last Updated on 08/02/05 
By Dr. Robinson Rojas