So I didn't see the numbers for 2010 or 2011, but it looks to me like 2007 was the ALL TIME high. The end of the biennium this year saw over 20 parks employees laid off, and that's only field staff, not including support staff.
The reason there was "hardly anyone" laid off was because they were able to make the necessary savings through not filling the positions of those recently retired and not filling/abolishing already vacant positions. I can assure there were still some that were laid off. And they don't keep hoping that the tax base comes back. After the $20 million this biennium to wean Parks off of general fund dollars, they will receive no more tax revenue. Their main source of money will be from the Discovery Pass.
Mt. Si belongs to the Department of Natural Resources, not Washington State Parks, that's why you don't see them providing services at Mt. Si.