What a shame that you accidentally lost a bunch of your paper wallets Loyce! You'll need to be more careful in future. Here's hoping you find them again in 10 or 20 years' time.
I don't think that's going to do much good. For the wealth tax for instance they can go back 5 years, and if funds are abroad they'll go back 12 years. With Bitcoin, I assume they'll argue funds aren't in the country. The tax fine can be up to 300% of the normal tax, plus of course interest.
The best way to avoid taxes is moving to a more tax friendly place, but I'm no where near rich enough for that.