All functions
get_murderdata	Get data from The Murder Accountability Project
sk_by_country	Serial Killers by Country
sk_by_race_decade	U.S. Serial Killers Percentage by Race and Decade
sk_definition_of	Number of Separate Serial Killers Operating in a Given Year in the U.S.
sk_frequency_by_decade	Serial Killer Frequency by Decade (Decade of First Kill)
sk_gender_decade_all	Frequency of Serial Killers Gender by Decade: U.S. and International
sk_gender_decade_intl	Frequency of Serial Killers Gender by Decade: International Only
sk_gender_decade_us	Frequency of Serial Killers Gender by Decade: United States Only
sk_iq_detailed	Serial Killer IQ - detailed
sk_iq_overview	Serial Killer IQ - overview
sk_method	Method by Which Victim Was Killed
sk_motives	Broad Motives
sk_victims_demographics	Characteristics of U.S. Serial Killer Victims
sk_victims_state	Victims By State
sk_victims_yearly	Number of Serial Killer Victims by Year
sk_yearly_avg_by_decade	Definition of Serial Killer by Decade