A large number of outliers are excluded from this histogram. All but one have a year of '0', which is possibly because the building is not yet completed or because the year completed may be unknown (I could not find a source to confirm this from the original dataset). The other value was a single skyscraper built in 2020, which I chose to exclude as I did not want to include it in the previous bin, nor did I want to have it have its own bin since it doesn't really contain 10 years of data.

Hover over the bars to see the exact number!