One final note on the Mexican economy relates to remittances, which are crucially tied to both the county’s financial status and the daily, paperless activities of its financial institutions. Remittances can be defined as the transfers of money by foreign workers to their home countries. Financial experts have noted that an increasingly substantial part of the Mexican economy consists of such remittances, which, by 2005, became the second largest source of foreign income flowing into the country (behind only crude oil export revenue). In 2006, remittances surged by more than 15%, reaching a record US$23 billion and representing nearly 3% of the country’s GDP. The vast majority of these money transfers (86%) are made via electronic transfer, with the main receptors being financial institutions in the states of Michoacán, Guanajuato, Jalisco, and Puebla, which together captured almost 50% of all remittances. As a result of these substantial inflows of currency, several state governments have implemented a program called Dos por Uno (Two for One), in which every peso of remittance results in a two peso contribution by the state government to finance public works and strengthen the state’s infrastructure.