The 2020, 2021 dip looks fishy, I would hypothize this is related to the pandemic lockdowns and overburdened hospitals reducing the number of cancer diagnoses.

The 2020, 2021 dip looks fishy, I would hypothize this is related to the pandemic lockdowns and overburdened hospitals reducing the number of cancer diagnoses. But it's a hypothesis that would need to be confirmed with the relevant numbers.