Here's a compilation for individual event marks which have been achieved at Decathlon competitions. Covering almost all of stats after 1958 and targeted Decathlon score might be at least above 7200 every year.
The new Decathlon 2000 website is just amazing. I visit it every day, just for the fun and I find every day new informations. It's a must, the better website devotes to decathlon fans as I am - Daniel Urien