What were the causes of Brtain 's population doubling every 50 years ?
As of 2002 , the conference has grown to 49 congregations with 8,542 members and a total population of 17,775 with 20 % and 66 % of population below 5 years and 21 years old respectively The population has an annual growth rate of 3.7 percent , doubling about every 19 years .