A household savings-account spreadsheet shows the following entries:

Calculate the household's dollar-weighted average return between the first and final dates.

Dollar-weighted average ____%

\begin{tabular}{lrcc} \multicolumn{1}{c}{ Date } & Additions & Withdrawals & Value \\ 1/1/2019 & & & 148,000 \\ 1/3/2019 & 2,500 & & \\ 3/20/2019 & 4,000 & & \\ 7/5/2019 & 1,500 & & \\ 12/2/2019 & 13,460 & & \\ 3/10/2020 & & 23,000 & \\ 4/7/2020 & 3,000 & & \\ 5/3/2020 & & & \\ \end{tabular}