Over the past 5 years, in addition to the 30% decline in 2020, revenue continued to grow for 4 years. After compounding fluctuations in gross margin, operating profit fell sharply by 77% in 2020, and returned to levels close to 2018 in 2021, reaching 306 million. The net profit curve is consistent with the gross margin curve, and earnings per share for the past three years have been consistent with the net profit curve.