There have been other studies like this done in other parts of the world, they all have come to similar conclusions. Here was one conducted in Germany from 199

There have been other studies like this done in other parts of the world, they all have come to similar conclusions. Here was one conducted in Germany from 1990-2017: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0185809 https://journals.plos.org/plosone/article?id=10.1371/journal... Here's another one that shows a significant decline in Puerto Rico: https://www.pnas.org/doi/full/10.1073/pnas.1722477115 https://www.pnas.org/doi/full/10.1073/pnas.1722477115