If you want to do this as a serious poll, and get realistic results from it, you are going to need to have to change the parameters you have set at the beginning of the post.
As you will see just from these first few replies, many people have been researching for much, much longer than 10 years, (the last box you can click on).
In the days before computers, and databases on computers, it took much more effort and time - visiting record offices, churchyards, etc. Even now, there is a vast amount of information to be found still not at the tap of a button on a computer.
I'd have to tick the 'over 40 years' box.
And yes, there are still things to be discovered even now!