The trade with Korea was quite sizable, amounting, in the 1710s-1730s for example, to 30,000 ''kan'' of silver, or roughly 8% of all silver coins minted in Japan during that time.<ref>Tashiro. p303.</ref> | The trade with Korea was quite sizable, amounting, in the 1710s-1730s for example, to 30,000 ''kan'' of silver, or roughly 8% of all silver coins minted in Japan during that time.<ref>Tashiro. p303.</ref> |