Sandbox

$EDYRSCONTRI{B}_{\gamma }^t=EDLYRSAG15_{\gamma }^{t-1}+(LIFEXPEDYRSBOOS{T}_{\gamma }^t-YRSEDCOM{P}_{\gamma }^t)*mfpedyrs$

where

$LIFEXPEDYRSBOOS{T}_{\gamma }^t=(LIFEX{P}_{\gamma }^{t-1}-LIFEXPCOM{P}_{\gamma }^t)*0.035$

$LIFEXPCOM{P}_{\gamma }^t=F(GDPPC{P}_{\gamma }^t)$

<math>YRSEDCOMP^t_{\gamma}=F(GDPPCP^t_{\gamma})