Robbery incidents have been non-existent in Fennville throughout the entire period from 2015 to 2022. This absence of robberies has persisted despite the population increase, maintaining a robbery rate of 0 per 1,000 people and no contribution to the state's robbery statistics.

Aggravated assault cases have shown some variation over the years. From 2015 to 2019, there were no reported cases. However, in 2020, there were 2 cases reported, increasing to 3 cases in 2021, before dropping back to 0 in 2022. This translates to a rate that peaked at 0.93 per 1,000 people in 2021 before returning to 0 in 2022. The city's contribution to the state's aggravated assault statistics was 0.01% in both 2020 and 2021, the only years with reported cases.

Examining correlations, there appears to be a moderate relationship between population density and violent crime rates. As the population density increased from 2,906 per square mile in 2019 to 3,128 in 2022, violent crimes initially rose but then dropped sharply. Median rent also showed a significant increase during this period, rising from $586 in 2019 to $853 in 2022, but its correlation with crime rates is not clearly established. The racial distribution remained relatively stable, with the white population decreasing slightly from 66% in 2019 to 59% in 2022, while the Hispanic population increased from 31% to 36%. However, these demographic shifts do not show a strong correlation with the observed crime trends.

Applying predictive models to forecast violent crime trends for the next five years (up to 2029) suggests a potential stabilization at low levels. Given the recent sharp decline to zero violent crimes in 2022, the model predicts that the city may maintain very low crime rates, possibly experiencing sporadic incidents rather than consistent yearly occurrences. However, this prediction should be interpreted cautiously due to the small sample size and recent volatility in the data.

In summary, Fennville has demonstrated a complex pattern of violent crime over the analyzed period. The most significant discoveries include the consistent absence of murders and robberies, the recent sharp decline in all violent crimes to zero in 2022, and the brief spike in aggravated assaults in 2020-2021. These trends, set against the backdrop of population growth and increasing housing costs, paint a picture of a city that has managed to maintain relatively low crime rates despite demographic changes. The future outlook suggests potential stability in low crime rates, but ongoing monitoring will be crucial to understand long-term trends in this evolving urban environment.