To examine whether the increases might be due to more people using drugs, you obtain data from the US Government's Substance Abuse and Mental Health Services Administration's (SAMHSA) annual surveys of reported drug, tobacco and alcohol use. In this survey, persons are asked about whether they have engaged in certain behaviors during the previous year. Because of the illicit nature of drug use, they may represent an under-estimate, but are considered the best figures out there at present. 6) In the table below, please calculate the mortality rate per thousand illicit drug users, using as the denominator the number of estimated drug users rather than the general population, for 2017 and 2021. Year 2017 2021 Estimated number of illicit drug users other than marijuana 305,000 299,000 Overdose deaths due to illicit drugs 1544 3050 Mortality rate per 1000 illicit drug users