Digging in further, I would look at two things.
1. It looks like you are hitting about 10 greens per round, what is your scrambling percentage on the 8 per round you are missing? Are you throwing away a shot or two there?
2. Your GIR % on Par 4's is over 22% less than on Par 3's and even more on Par 5's. Obviously, from the fairway with a good like (or teed up), you hit the green at a very high percentage. What does your fairway's hit % look like on par 4's. Are you missing those greens (looks like about 5 per round on par 4's) because you are spraying the driver? Or because you are hitting bad iron shots? Are you disproportionately further from the whole compared to 3's and 5's, and it is just that you are hitting long iron's? Working on accurate tee shots and keeping the ball in play could be worth a stroke or two.
If you can find a shot in the scrambling per round, a shot in the par 4's per round, and make one more putt per round, that gets you to zero. Look at it as small steps to take. You have to consider everything, not just making more birdies.