Robbery incidents in the city showed a decreasing trend. There were three robberies reported in both 2010 and 2011, representing 0.05% of state robbery crimes. This number decreased to one in 2012 (0.02% of state crimes) and zero in 2013. The robbery rate per 1,000 people declined from about 0.47 in 2010 to 0 in 2013, indicating a significant improvement in this category of violent crime.

Aggravated assault, the most prevalent form of violent crime in Washington, showed fluctuations over the years. There were 37 cases in 2010 (0.33% of state crimes), decreasing to 31 in 2011 (0.30%), then rising sharply to 47 in 2012 (0.43%), before returning to 31 in 2013 (0.32%). The rate per 1,000 people varied accordingly, from about 5.77 in 2010 to 5.03 in 2013. Despite these fluctuations, aggravated assault remained the primary concern for violent crime in the city.

Examining correlations, there appears to be a strong relationship between population decline and the overall decrease in violent crimes. As the population density decreased from 833 per square mile in 2010 to 658 in 2022, violent crimes generally trended downward, suggesting that lower population density might contribute to reduced violent crime rates.

Applying predictive models based on these trends, we can forecast that by 2029, Washington may see a further reduction in violent crimes, particularly in robberies and rapes. Aggravated assaults may continue to fluctuate but could trend downward if current patterns persist. The murder rate is likely to remain very low or at zero.

In summary, Washington has experienced a general decline in violent crimes from 2010 to 2013, coinciding with a decrease in population. The most significant improvements were seen in robberies and rapes, while aggravated assaults remained the primary violent crime concern. These trends, if continued, suggest a potentially safer environment for residents in the coming years, though ongoing efforts to address aggravated assaults will be crucial for further improving public safety.