Missing Quarters

I collect quarters, and I'm currently missing the following Philly mint quarters ( I also collect quarters from the Denver mint, but they are not in a book, so it is hard to list what I am missing...)

But for the Philly mint quarters I am missing
2003 - Arkansas
2004 - Michigan
2004 - Wisconsin
2006 - Nebraska
2006 - Colorado
2006 - North Dakota
2006 - South Dakota

Obviously I'm missing all 2007's, 2008's