With American corporate interests firmly rooted in Cuba, the U.S. tariff system was adjusted accordingly to strengthen trade between the nations. The Reciprocity Treaty of 1903 lowered the U.S. tariff on Cuban sugar by 20%. This gave Cuban sugar a competitive edge in the American marketplace. At the same time, it granted equal or greater concessions on most items imported from the United States. Cuban imports of American goods went from $17 million in the five years before the war, to $38 million in 1905, and eventually to over $200 million in 1918. Likewise, Cuban exports to the United States reached $86 million in 1905 and rose to nearly $300 million in 1918.