Treebeard's Stumper

DoubleDigit Years
1998 has two 9's, as do all the years in the 90's. But when are the last and next years that don't have any repeated digit? Between those dates there is a run of 25 consecutive doubledigit years. When is the next time that there will be such a run of doubledigit years? The longest possible run of uniquedigit years is just 10, for example the years 110 or 1221. Adding any century digits would only force an early match, so 10 is the limit. But what is the longest run of doubledigit years since the year 1 A.D. and into the future?
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