166.710 Silver Proof sold in 1 4 Days 2013 US Mint

2 year in a row No Back-order on my sup
2000 thru 2011 each year My silver proof order was Back-ordered 2 in row not???
Why $$
State Park Not as good as State Quarters???? ???:kewl:Here the link->>>http://www.coinnews.net/2013/05/07/2013-silver-proof-sets-at-166710-in-debut-sales/