Camera sales, in charts
Vitaliy has posted some great charts on camera sales over on his web site: Camera sales, including Novemer 2013 reports – Personal View
You can readily see the drop off in camera sales from year to year. I think the December data point is bogus as the caption says through November 2013.
Second charts shows that DSLR unit sales are down slightly but mirrorless sales are up quite a bit.