10,000 indoor maps. You can consider this proof positive that Google is making headway in its effort to chart every nook and cranny of navigable terrain, even if this includes carpet and linoleum.
Source: http://www.wired.com/gadgetlab/2012/07/17-organizations-that-made-their-floorplans-public-on-google-maps/
FINISAR FEI COMPANY FAIRCHILD SEMICONDUCTOR INTERNATIONAL FAIR ISAAC