Maybe you already know it. When a country consistently has more than 65-70% allocated (used) bandwidth, we consider the expansion. When a country has consistently more than 90% allocated bandwidth, expansion is mandatory. Currently Canada is around 55% while Sweden less than 50%. However, in Sweden, we have much stronger demand in Stockholm (better peering with various residential ISPs) than Uppsala. If you consider Stockholm as an area of its own, or equivalently Sweden as a country relying essentially on Stockholm, then you have consistently 70% allocated bandwidth. That's why expansion in Stockholm is now under evaluation with higher priority than Canada.
Kind regards