I am starting to detest articles that do not provide any comparisons to the numbers they throw out. In 1974 and 2009 there were 648 and 59 murders in Manhattan

I am starting to detest articles that do not provide any comparisons to the numbers they throw out. In 1974 and 2009 there were 648 and 59 murders in Manhattan respectively. While in US total in 1974 and 2009 there were 20710[9366] and 15399[15350] murders respectively. Number in square bracket is alternative number from data in second table on cited page below. Thus it looks that there is significant reduction of murders in Manhattan specifically. Perhaps most striking statistics is that in 1974 murders in Manhattan constituted over 3% of total murders in the country while having only 0.7% of population. In contrast in 2009 murders in Manhattan constituted 0.4% of nation total while having 0.5% of population. I am using data only form first table here. I am sure that there are a host of other factors that are affecting this, notably rise of property prices which have pushed out substantial portion of lower income population out of Manhattan. I used data from: http://www.disastercenter.com/crime/uscrime.htm http://www.disastercenter.com/crime/uscrime.htm and https://www.google.com/search?q=manhattan+population https://www.google.com/search?q=manhattan+population