What is the reason for the (a) increase in the number of murders as compared to attempted murders from the 2003-04 to 2008-09 financial years, (b) acceleration in this trend in Limpopo and the North West, (c) reverse in the trend in the (i) Eastern Cape in the 2007-08 and 2008-09 financial years and (ii) Western Cape in the 2008-09 financial year and (d) higher rate of murder than attempted murder in the Eastern Cape and the Western Cape, contrary to other provinces, since the 2004-05 financial year?