Numer of Executions by Death Penalty in the USA, since 1976. <a rel="nofollow" class="external text" href="http://www.deathpenaltyinfo.org/documents/FactSheet.pdf">Data-source</a>
<a href="//commons.wikimedia.org/wiki/User:MichaelSchoenitzer" title="User:MichaelSchoenitzer">Michael F. Schönitzer</a>
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<span class="int-own-work" lang="en">Own work</span>