George has just turned 26 years of age. In 4 years he expects to start saving for retirement. He wishes to be able to withdraw KD 100,000 per year during the first 10 years of retirement (the first withdrawal coming on his 61^st birthday) and KD 150,000 during the next 10 years of retirement. As a precaution against unexpected longevity, he would like to have a net worth of KD 500,000 after the withdrawal on his 80^th birthday. George expects the return on his investments to 6% until he turns age 50 and 7% thereafter. What equal annual amount must George save at the end of each year (the first deposit will occur on his 31^st birthday and the last deposit will occur on his 60^th birthday) to meet these retirement goals?