Stop, just stop
Stop giving that joke of a ranking known as TIOBE publicity, it is nothing more than a glorified Google search rank graph. If you do that, perhaps it will finally suffocate and die.
These guys index actual job ads, not google searches. As can be seen from their graph, use of Assembly in jobs where you actually get paid is in long-term decline, and currently the demand for it is on par with the likes of Erlang (ie. almost non-existent) http://www.itjobswatch.co.uk/charts/permanent-demand-trend.aspx?s=assembly+language&l=uk