Around 10,000 visas were wasted in FB category in the FY 2013. This will be allotted to EB category in FY 2014. Please see this blog post for more details.
FB category wasted around 18,000 visas in FY 2012. These were allotted to EB category in FY 2013 (as you may have noticed above). This resulted in EB2 India, EB3 India and EB3 ROW dates moving forward aggressively.
EB5 China consumed 6,895 visas out of EB5 demand of 8,564. This means China consumed more than 80% of total EB5 visas allotted in FY 2013. This number could increase in 2014.
EB India and EB China together consumed around 34% of total EB visas allotted. This matches with population count (around 30% of world population reside in India and China)