A grandfather has been saving money each year for his granddaughters graduation from college. When she was born May 31st 2000, he invested $1,000 into an ETF that tracked the S&P500 Index. On her next seven birthdays, the grandfather invested an additional $1,000 each birthday. Grandfather lost his job during the great financial crisis of 2008/9 and made no further investments for the next five birthdays the last birthday being her 12th in fact, on his granddaughters 10th birthday, grandfather actually took $200 out of the ETF investment to pay for a birthday gift! Grandfather officially retired, and began drawing social security. For birthdays 13 through 20, he invested an additional $500 each birthday.On her 21st birthday, which conveniently was her date of graduation, grandfather sold the entire ETF investment and present his granddaughter with the proceeds of $34,600. Ignoring taxes, and assuming there were no other payments into the investment or monies withdrawn other than those described above, what is the annual money-weighted return of this investment?

SHOW WORK AND WILL RATE THUMBS UP