Work Experience Resume Question

I am in the process of making a new resume. I have been at my present job for the past 9 years. How many years of work experience do I need to list? Some people have told me go back only 5 years and others 10 years. Should I just list my present job as work experience or list a few more jobs?

The online applications have 4 spots for listing employment. It also does not state how far in the past I should list.

Does anyone know the appropriate length of time to list employment?

Thanks, I haven't been able to find it anywhere!!