ill
Superstar
If you read the graph, the colors show you, the highest peaks aren't even from West Bank or Gaza. It's from the "other" color. Plus how old is the example?
Last recorded date on that chart is 2000. While you're correct that the "other" category is showing the largest increase (Palestinians globally expanding) the WB+Gaza and the Palestinians in Israel are both also rising though not at the same rate as the "others"