Chester city criminality evolution

I continue my study with chester city in pennsylvania. A very hard city where the criminality is crazy.

I give the violent crimes and property crimes values extracted from FBI and Pennsylvania Uniform Crime Reporting Program.

We can see an long evolution of the criminality during this last decade, apparently more effort  are made in year 1999 and 200 to resolve some issues in security. but the crime is increasing since this period. 

Brut data

	2012	2011	2010	2009	2008	2007	2006	2005	2004	2003	2002	2001	2000	1999	1995	1990	1985	1980
Violent crime	3174.882629108	3148.4741784038	2441.8355312534	2647.2118043199	2879.5239914843	2568.0045653415	2652.9346741797	2524.9384985537	1968.2813215219	1491.2918248136	1847.8495785606	1540.4643089607	3022.7383730396	3178.8539264549	5484.1647273095	5191.6093272171	3107.1683309558	3216.278306531
Murder and nonnegligent manslaughter	64.5539906103	61.6197183099	64.3293663557	38.3257138164	46.399912659	73.3715590098	48.5292928204	40.5504041524	51.1591588357	18.8430374976	51.32915496	35.2571056628	51.5547837412	22.3164472216	55.6511180816	35.8371559633	15.6027104137	35.0071108194
Forcible rape	49.882629108	67.4882629108	83.0920982095	68.4387746722	114.635078334	67.9366287127	56.6175082904	91.914249412	83.4702065214	88.8314624889	83.747568619	43.3933608158	70.5486514354	128.9394728359	204.8972983912	222.1903669725	187.2325249643	126.9007767203
Robbery	636.7370892019	627.9342723005	552.1603945534	531.0848914561	646.8693705988	627.7344493057	649.7533094282	619.0695033927	457.7398422144	288.029287464	437.6485843959	368.8435669343	697.3462853422	662.0546009075	1558.2313062835	1017.7752293578	815.7988587732	1207.7453232688
Aggravated assault	2423.7089201878	2391.4319248826	1742.2536721347	2009.3624243752	2071.6196298925	1798.9619283133	1898.0345636408	1773.4043415966	1375.9121139503	1095.5880373631	1275.1242705857	1092.9702755478	2203.2886525208	2365.5434054899	3665.3850045533	3915.8065749236	2088.5342368046	1846.6250957226
Property crime	3606.220657277	3879.1079812207	3355.8486115578	3556.0787319664	3788.416398275	3614.2286475176	3957.8334366828	4000.9732096997	3473.437626215	2543.810062182	3317.4843311001	3221.9570405728	4862.430129701	5482.4072007736	8714.4591723161	7530.5810397554	6851.8188302425	7679.6849360026
Burglary	1364.4366197183	1625.5868544601	1249.0618634073	1335.9248816009	1228.2329821497	1187.5322698986	1197.0558895689	1297.6129328756	1066.2645736288	619.1283749226	645.6667387076	659.0366673899	1240.0282194606	1522.4776215627	2592.8361833451	2119.1704892966	2342.6355206847	3369.4344163658
Larceny- theft	1866.1971830986	1836.8544600939	1710.0889889568	1730.1322237127	1948.7963316775	1725.5903693035	1995.0931492815	1919.3857965451	1658.6337812004	1152.117149856	1745.1912686406	1659.7960512042	2243.9897975796	2534.1565622753	4062.5316199535	3741.3990825688	3586.3944365193	3435.0727491522
Motor vehicle theft	299.2957746479	416.6666666667	396.6977591937	490.0216266528	611.3870844478	701.1060083154	765.6843978324	783.974480279	748.5392713859	699.8842499125	842.8787551329	816.3376003471	1191.1868453899	1157.9756502765	2059.0913690175	1670.0114678899	922.7888730385	875.1777704846
Arson	76.2910798122	76.2910798122	88.4528787391	109.5020394755	81.88219881	84.2414196038	67.4017955838	97.3209699657	72.6998572929	72.6802874909	83.747568619	86.7867216316	187.2252672709	267.7973666592