Passage: In 1985, notes were introduced in denominations of 5 hào, 1, 2, 5, 10, 20, 30, 50, 100, and 500 đồng. As inflation became endemic, these first banknotes were followed by 200, 1,000, 2,000, and 5,000 đồng notes in 1987, by 10,000 and 50,000 đồng notes in 1990, by a 20,000 đồng note in 1991, a 100,000 đồng note in 1994, a 500,000 đồng note in 2003, and a 200,000 đồng note in 2006. Banknotes with denominations of 5,000 đồng and under have been discontinued from production, but as of 2015 are still in wide circulation.Five banknote series have appeared. Except for the current series, dated 2003, all were confusing to the user, lacking unified themes and coordination in their designs. The first table below shows the latest banknotes, of 100 đồng or higher, prior to the current series.

Question: in waht year were the notes intriduced in the dimension of 5,1,2,...?
1985