We all know that the loot comes in good and bad cycles. Out of the skills you've gained in 5 years, I guess you either don't hunt too often or your hunting runs are very short, so there is a chance that you miss all your good cycles
.
About globals. I see that your main skill is the Handgun (2470). I can say that when I got my very first global I was far over 3k in my main skill Laser Sniper, so your luck seems even better than mine
. Though globals don't guarantee breaking even anyway.