It's no secret most dataviz experts do not like pie charts.
Our disdain for pie charts causes people to look for alternatives.
Sometimes, the alternative is worse. Witness:
This chart comes from the Spring 2018 issue of On Investing, the magazine for Charles Schwab customers.
It's not a pie chart.
I'm forced to say the pie chart is preferred.
The original chart fails the self-sufficiency test. Here is the 2007 chart with the data removed.
It's very hard to figure out how large are those pieces, so any reader trying to understand this chart will resort to reading the data, which means the visual representation does no work!
Or, you can use a dot plot.
This version emphasizes the change over time.