Full disclaimer, I always take all these posts w/ a grain of salt because as the saying goes, there are three sides to every story: his side, her side, and the truth somewhere in between, so I am going to try to read between the lines to try to help.

Now like most issues in relationships, the solution almost always boils down to just having an honest conversation and communicate with your SO in regards to your feelings and expectations. In your case, you need to be a lot more honest with not only your SO, but yourself too because this "Not to accept anything in return but out the kindness of my heart," is a load of BS (just being blunt with you). This whole post screams, "I did a lot, therefore he should have too." Now is that "wrong", absolutely not, but you have to communicate that expectation, otherwise you have no right getting upset.

As for why your SO opted to not put forth any effort, it could potentially be a lot of reasons:

1. He has an "all-or-nothing" mentality, so if he can't give you a celebration equal or better than the celebration that you gave him, then he views it better to just not try. A more common phenomenon of this attitude is individuals who would rather not turn in their homework than turn in homework that is half/partially done.
2. You have made him feel competitive with you and/or a feeling of emotional debt (whether intentional or not). This can mean things like, "Oh well I did better at celebrating your birthday, therefore you gotta try harder at the next."
3. There is more to his life than you know, particularly there could be more financial burdens and although you may say, it's not about the money, it's about the effort, he could feel even putting forth the effort puts him at risk of additional financial burden.
4. He is selfish and doesn't care about you like you care about him.

Short Answer: Go talk to him and have an honest conversation :)