The annual summer to winter variation is around 2000gigatons(gt), the annual year on end lose is now getting up around 130+gt, on 94+gt lose over the decade.
2000gt of water can both add and remove a lot from the sea levels very easily. The near methodical reduction in annual ice and increasing decade averages are not good signs.
Four decades of Antarctic Ice Sheet mass balance from 1979–2017
https://www.pnas.org/doi/10.1073/pnas.1812883116
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