Here's the bigger picture DJIA going back to 1980. The market grew faster than the long-term average from 1995 to 2008. After the crash, it resumed its long-term growth trend. You can eyeball in that trend.
looks to my eyeball like the slope increased mid-way through the 2010-2020 decade
Compare the first derivatives, not the percentage increase?
The market had dropped from 14K to around 8.5k when he was elected and dropped another couple hundred before he was inaugurated. It bottomed out around 7000 near the end of February his first year.