I will fall into
"Stage 4".
Stage 4 is Post-transition, these societies are categorized by low birth and low death rates.
The demographic
transition theory is a summed up
portrayal of the changing form of mortality, richness and development rates as
social orders move starting with one statistic administration then onto the
next. The term was first instituted by the American demographer Frank W. Notestein
in the middle of 20th century.