The country lost 63 tigers in 2013 with Karnataka alone losing 16 big cats.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/2013-country-lost-48-tigers-poachers
[2] http://admin.indiaenvironmentportal.org.in/category/author/bipin-chand-agarwal
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/economic-times-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/madhya-pradesh
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/national-tiger-conservation-authority
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttaranchal-uttarakhand
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/poaching
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kaziranga-sa
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dudhwa-np
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger-reserves
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/panna-np
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wayanad
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife