https://docs.google.com/spreadsheets/d/17XPFFv7K3PYogALGkHx8C0oWpV01Iyecf1u6x8_Fgh4/edit#gid=601627492 RBY lower tier usage stats
http://www.pokemonperfect.com/forums/index.php?threads/rby-1u-world-championship-4-usage-stats.4629/ RBY main tier usage stats
http://www.pokemonperfect.com/forums/index.php?threads/gsc-1u-l-world-championship-1-usage-stats.4717/ GSC main tier usage stats
http://www.pokemonperfect.com/forums/index.php?threads/adv-1u-l-world-championship-1-usage-stats.4677/ ADV main tier usage stats
RBY lower tier usage stats