98991114_rime_in_the_United_States_2006__Reason_for_Estimation
[State(s)] Montana [Estimation Method] State totals were estimated by updating previous valid annual totals for individual jurisdictions, subdivided by population group. Percent changes for each offense within each population group of the Mountain Division were applied to the previous valid annual totals. The state totals were compiled from the sums of the population group estimates. [Reason for Estimation] 
The state UCR Program was unable to provide complete 1994 offense figures in accordance with UCR guidelines.
Table 01, Data Declaration - Crime in the United States 2006
Reason for Estimation