The Government of New Brunswick has a web page called Components of Growth. You can find it here: http://www.gnb.ca/0160/Economics/ComponentsofGrowth.htm.
These components include: births, deaths, Immigrants, Emigrants, Returning emigrants, Net temporary emigrants, Net interprovincial migrants, Net non-permanent residents and a residual deviation.
Now the cute thing about this page is that most likely six of the last seven years have registered a net population decline in New Brunswick (when they get around to adding the residual deviation figures – which have averaged a negative 1,016 per year since 1972 and have only been positive five times in the past 33 years).
Why aren’t they calling it Components of Decline?