Cities that can be counted here include Buenos Aires, Rio de Janeiro, Montevideo, Caracas, Johannesburg, Cape Town, Moscow, Saratov, Tula, Kiev, Budapest, Berlin and Manchester amongst others.
While in the 13 years following the Holocaust the Jewish population grew by one million, it took another 38 years for it to grow another million.
The other major language groupings are Hebrew, Russian, French and Spanish.
Considered in isolation, without reference to the kiruv potential or finances of different places, demographics would require that these are the countries on which the lions share of outreach efforts ought to be focused.
Largest current exodus is to Germany, followed by Israel and the USA. However, replenished by immigration from other Latin American countries to Mexico.
Those leaving are much wealthier than those coming, though immigration to Mexico has positively impacted on its Judaism.