Most (21) of the reporting agencies submitted reports for both 2004 and 2005, but 11 reported only data for 2005; 6 reported offense data only for 2004. Data were submitted as summary information in either monthly, quarterly, or a yearly format. The total number for all offenses was 44,660 for 2004 and 46,018 for 2005. Index crime rates were low compared with national rates for 2004 and 2005. Overall, the percentage of these offenses cleared was very good, with 60.7 percent of all crimes cleared in 2004 and 87.6 percent cleared in 2005. Many agencies reported clearance rates greater than 80 percent. A clearance by arrest can be claimed when an offender is under 18 years old and is cited to appear in juvenile court or before other juvenile authorities. An offense can also be "cleared exceptionally" when an investigation has definitely established the identity of an offender and the exact location of an offender is known, but for some reason cannot be taken into custody (i.e., deceased or cannot be extradited, etc.). For all the offenses recorded for 2004 and 2005, alcohol was involved in approximately 40 percent of the offenses. The presence of drug use was most common for the offenses of prostitution, commercialized vice, robbery, homicide, stolen property, and fraud. The most common reported offenses were drunkenness, disorderly conduct, liquor law violations, assault, drunk driving, theft, domestic violence, suspicious person report, and drug violations. Data are provided for each of the reporting tribal agencies. Extensive tables