All data has been derived from the transcriptions in the IGI derived from the official 1911 transcription - thus it is a transcription of a transcription of an earlier transcription !
Based on various Church, Civil and, post 1821, Decennial Census data
Large gaps in the record are obvious 1620-25, 1632-36, 1665-67. The figures have been derived from a number of batches in the IGI (see Andreas for explanation) and still need to be checked against the 1911 transcript. Something seems strange around 1740.
Houston quotes crude birth rates for England of 32/1000 in the 1690's and 33/1000 in the 1750's with a maximum of 50/1000. 10-year average Birth Counts are around 10 in the 1620's and 22 in the 1720's - using Houston's rates this later figure correponds to an estimated population of around 660 (cf count of 643) and around 320 in the 1620's.
TBD - IGI batch numbers removed from pre 1800 marriages (see Andreas for details)
Several epidemic peaks can be noted.
R.A. Houston The Population History of Britain and Ireland 1500-1750, Macmillan Education Studies in Economic and Social History (ISBN 0-333-56564-9) 1992