5. At the beginning of the year, Con Daily's portfolio was worth $9,000. At the end of each of the next four quarters, Con received a gift of $500, which was invested in the portfolio. At the end of each quarter, Con's portfolio was worth, respectively, $9,800, $10,800, $11,200, and $12,000. What was the time-weighted rate of return on Con's portfolio during the year?