If I give the impression that I have loads of Batman books piled high in longboxes, I assure you I really haven't. So as of this May 2011 morning, the current numbers are as follows
Batman (1940): 219 of 710 = 31%
Annuals (inc 1million+ Issue 0): 1 of 30 = 3%
Detective Comics : 171 of 876 = 19.5%
Annuals (inc 1million+ Issue 0): 1 of 14 = 7%
Shadow of the Bat: 94 of 94 = 100%
Annuals (inc 1million+ Issue 0): 6 of 7 = 86%
Legends of the Dark Knight: 175 of 214 =82%
Annuals (inc Issue 0): 2 of 8 = 25%
Batman Chronicles : 23 of 23 = 100%
Batman Confidential: 7 of 54 = 13%
Batman: Gotham Knights: 3 of 74 = 4%
Batman Inc : 5 of 6 = 83%
Batman and Robin: 16 of 23 = 69.5%
Azrael volume 1: 29 of 100 = 29%
Annuals (inc 1million): 0 of 4 = 0%
Azrael volume 2: 1 of 18 = 5.5%
Batgirl (2000): 2 of 73 = 2.5%
Annual: 0 of 1 = 0%
Birds of Prey: 2 of 127 = 1.5%
Catwoman volume1: 3 of 94 = 3%
Annuals (inc 1million+ Issue 0): 0 of 6 = 0%
Nightwing: 31 of 153 = 20%
Annuals (inc 1million+ Issue 0): 0 of 16 = 0%
Robin Mini Series 13 of 15 = 87%
Robin (ongoing): 9 of 183 = 5%
Annuals (inc 1million+ Issue 0): 1 of 9 = 11%
The next time I do this will be one years time!