If you had one million, and you bought aluminum last year, then you have already made 470,000; if you bought gold, then you have already made 720,000; if you bought copper, then you have already made 910,000; if you bought silver, then you have already made 1,290,000; if you bought platinum, then you have already made 1,710,000. So what did you buy last year? $BTC ?