SPY is up 3% YTD while DXY (which measures the value of a dollar) is down 9% YTD. If you own shares of SPY, then you hold them in dollars, so the real change in value of your stock is [share price] x 1.03 x 0.91, which translates to being down over 6%.
BUT not only is your investment value down, if you live in the US you presumably get paid in dollars as well. Which means you’ve gotten a 9% pay cut since the start of the year.
I thought about using the 5 year charts, but I decided against it because that would include things from the initial COVID lockdowns and I felt that skewed results. But the NASDAQ is up significantly from this time 5 years ago