Im glad you touched this topic briefly, because nobody seems to know the rules exactly. 1.3% is not bad at all compared to different countries, but the real mystery is... where was it all then, at that moment. And with how much value..I just dont remember, and not even from THIS Jan 1st.
Cryptowallets arent giving a 'jaaroverzicht'.

I only started ended 2017 so this seems like a issue for next year for me (except for the fact that I didnt check anything on Jan 1st this year)