How old is a Mercury outboard motor 45 HP serial number 9073864 Manufactured in belgium?

From what I can find in serial number tables, your outboard is made in 1975. My refernce: DELLguide/Mercury/3565Hk/tabid/107/Default.aspx">http://www.marinshopen.se/Hj%c3%a4lpmedel/MoDELLguide/Mercury/3565Hk/tabid/107/Default.aspx