Please answer a question about the following article about Tennessee:

Capital punishment has existed in Tennessee at various times since statehood. Before 1913 the method of execution was hanging. From 1913 to 1915 there was a hiatus on executions but they were reinstated in 1916 when electrocution became the new method. From 1972 to 1978, after the Supreme Court ruled (Furman v. Georgia) capital punishment unconstitutional, there were no further executions. Capital punishment was restarted in 1978, although those prisoners awaiting execution between 1960 and 1978 had their sentences mostly commuted to life in prison. From 1916 to 1960 the state executed 125 inmates. For a variety of reasons there were no further executions until 2000. Since 2000, Tennessee has executed six prisoners and has 73 prisoners on death row (as of April 2015).

How many inmates has Tennessee executed since 2000?
six