<prompt> Translate the following text to SwahiliIndeed, the VSL estimate of 6 million 1999 dollars is itself the central tendency of a number of estimates of the VSL for some rather narrowly defined populations.  <response>: Kwa kweli, takwimu ya VSL ya 6 milioni dola za 1999 yenyewe ni mwelekeo wa msingi wa takwimu kadhaa za VSL kwa baadhi ya idadi ya watu iliyofafanuliwa kwa njia nyembamba. 