It sounds like you did fine with the amendments you added last year. Sand doesn't break down to dust in a years time so you won't need to add that for a long time, if ever. However, the compost does break down and that has to be replaced.

In my own garden, each early Spring, I do turn in rotted leaves that I've raked off the beds ( I have these because I mulch all my beds with fallen leaves each autumn) I also turn in the first cut of the lawn and maybe a scattering of rotted manure from a commercial bag I get at Home Depot. A couple of weeks later I turn the beds again because by that time early weed seeds have begun to sprout, I'll turn them again a week before planting.

I like adding grass clippings to the bed a few weeks before planting because nothing (IMHO) is better for attracting worms to a bed. The worms aerate the soil and also leave behind their "behind leavings" (ehem) and that is one of the very best fertilizers you could ever have in your garden.

Honestly, if what worked well the year before is okay with you, then repeat the process. I don't think you need to increase the sand content, but the OM (organic materials) will need to be replaced. Obviously, year to year those may vary on what's available if your a freebie scrounger, but if you purchase your OM then you can repeat based upon your budget.

T