Portland housing inventory continues to rise

Inventory is up another 0.6% this week, to a high of 20,643 single family homes and condos. I imagine the inventory will continue to rise for a few more weeks, until sellers start pulling their homes off the market and hope for better luck in the spring. I'd like to know if this is an all time high for Portland, for the nation as a whole we're at an 18 year high, which corresponds to the last major real estate recession from the early 90's when prices went flat for six! years.