According to the figure, in the fourth quarter of 2000, Minnesota was one of only a dozen states where the share of 'underwater' mortgages was less than one tenth of one percent! (between 0% and 0.1%).
However, by fourth quarter 2009, our rate of negative equity homeowners had increased to between 6% and 10%:
Interestingly... NO STATE was in the 0%-0.1% category by the end of the 'aughts'.
The complete report is here.