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$NUMNWP_{\gamma }=NUMNWP_{\gamma }^{t-1}*(1+NumNwGR_{\gamma }^{t})$

where

NumNwGR^t_{\gamma}=NUMNWPGR^{t-1}_{\gamma}*(\frac{nwplm-NUMNWP^{t-1}_{\gamma}}{nwplm-NUMNWP^{t-1}_{\gamma}})^2*numnwpgrm</math>

<math>nwplm=numnwplim*POP_{\gamma}