Banking has traditionally been one of the strongest service export sectors in Uruguay: the country was once dubbed "the Switzerland of America", mainly for its banking sector and stability, although that stability has been threatened in the 21st century by the recent global economic climate. The largest bank in Uruguay is Banco Republica (BROU), based in Montevideo. Almost 20 private banks, most of them branches of international banks, operate in the country (Banco Santander, ABN AMRO, Citibank, Lloyds TSB, among others). There are also a myriad of brokers and financial-services bureaus, among them Ficus Capital, Galfin Sociedad de Bolsa, Europa Sociedad de Bolsa, Darío Cukier, GBU, Hordeñana & Asociados Sociedad de Bolsa, etc.

What has traditionally been the strongest service export sectors in Uruguay?