Please calculate how many US dollars of profit or loss (rounded to one decimal place) would be obtained by following these steps for three consecutive years starting from 2020: based on the BTC/USD quotes provided by the Binance exchange (using Beijing time as the trading time), buy 1 Bitcoin at the opening price on the first trading day of each year and sell it at the highest price on June 30th of the same year.

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Summary
The table calculates the dollar profit or loss that would have been realized by buying 1 BTC at the opening price on January 1 (Beijing time) and selling at the highest price on June 30 of the same year. Opening prices for 2020 , 2021 , and 2022 as well as the corresponding June 30 highs for 2020 , 2021 , and 2022 were sourced from Binance spot data. Subtracting each year’s opening price from its June 30 high gives the profit or loss, rounded to one decimal place, for each of the three years.