The solve rate, which represents the percentage of crimes solved in a given year, has been at historically low levels. In the 1960s and 1970s, agencies reported unrealistically high clearance rates, possibly due to low pre-Maranda arrest standards. However, in the last 30 years, clearance rates have stabilized, with violent crime clearance rates remaining around 45% from the mid-90s to 2019. Despite annual fluctuations, the overall trend has been one of relative stability over the last few decades.