Ready to hear some good economic news? Bakery is one category showing improved sales this year. Supermarket in-store bakery sales reached $10.4 billion for the 52-weeks ended December, 2011, a 2.2% increase over the same period last year, according to the Perishables Group. The International Dairy-Deli-Bakery Association (IDDBA) recently released this data and other in-store…