Is the slippage graph just for net life increase slippage? Or any slippage? It caught my eye this explosion in slippage happened years before GLP-1s, and exa

Is the slippage graph just for net life increase slippage? Or any slippage? It caught my eye this explosion in slippage happened years before GLP-1s, and exactly in the year of a global pandemic that had sky-high mortality rates for older people.