E D Y R S C O N T R I B γ t = E D L Y R S A G 15 γ t − 1 + ( L I F E X P E D Y R S B O O S T γ t − Y R S E D C O M P γ t ) ∗ m f p e d y r s {\displaystyle EDYRSCONTRIB_{\gamma }^{t}=EDLYRSAG15_{\gamma }^{t-1}+(LIFEXPEDYRSBOOST_{\gamma }^{t}-YRSEDCOMP_{\gamma }^{t})*mfpedyrs}
where
L I F E X P E D Y R S B O O S T γ t = ( L I F E X P γ t − 1 − L I F E X P C O M P γ t ) ∗ 0.035 {\displaystyle LIFEXPEDYRSBOOST_{\gamma }^{t}=(LIFEXP_{\gamma }^{t-1}-LIFEXPCOMP_{\gamma }^{t})*0.035}
L I F E X P C O M P γ t = F ( G D P P C P γ t ) {\displaystyle LIFEXPCOMP_{\gamma }^{t}=F(GDPPCP_{\gamma }^{t})}
<math>YRSEDCOMP^t_{\gamma}=F(GDPPCP^t_{\gamma})
