Google $($now called Alphabet$)$ went public April $2004$ with a share price of $$84.$ Since then, the company split its stock into two classifications $($GOOG$-$A & GOOG$-$B$).$ Since then, each share class split again $20$:$1.$ An investor who bought one share of Google in April $2004$ at the initial public offering $($IPO$)$ price of $$84,$ would now own $20$ shares of GOOG$-$A & $20$ shares of GOOG$-$B$.$ Assume that in April $2023,$ the prices of GOOG$-$A & GOOG$-$B were $$123$ & $$124$ per share respectively. What was the investor's annualized return during this period?