The liberalization of the Portuguese economy continued under Salazar's successor, Prime Minister Marcello José das Neves Caetano (1968–74), whose administration abolished industrial licensing requirements for firms in most sectors and in 1972 signed a free trade agreement with the newly enlarged EC. Under the agreement, which took effect at the beginning of 1973, Portugal was given until 1980 to abolish its restrictions on most community goods and until 1985 on certain sensitive products amounting to some 10 percent of the EC's total exports to Portugal. EFTA membership and a growing foreign investor presence contributed to Portugal's industrial modernization and export diversification between 1960 and 1973.