See a source that said: In 1931, U.S. President Hoover's annual salary was $75,000; In 1995, U.S. President Bill Clinton's annual salary was $200,000. In the past 70 years, the salary of the president of the United States has increased or decreased. In terms of quantity, it is increased, but in fact it is decreased. According to actual data, with a CPI of 100 in 1992 as the base year, the CPI in 1931 was 8.7 and the CPI in 1995 was 107.6, thus increasing the price level by 12.4 times. We can calculate the salary of President Hoover in 1931 in terms of purchasing power in 1995 US dollars: Hoover's salary in 1995 = nominal wage in 1931 x (consumer price index 1995 / consumer price index in 1931) = $75,000 x (107.6/8.7) = $927,586 million. President Clinton's salary in 1995 can also be calculated on the basis of the purchasing power of 1931 DOLLARs: Clinton's salary in 1931 = nominal wage in 1995 x (consumer price index 1931 / consumer price index in 1995) = $200,000 x (8.7/107.6) = $16,170,000. That is to say, Hoover's real salary is 4.6 times that of Clinton, who is only 21% of Hoover's salary. The real salary of the president of the United States has dropped significantly in the past 70 years.
Not only in the United States, but also in our own wages, we know whether they have increased or decreased. But after looking for a long time, I did not find the consumer price index of China over the years. The increase in the standard of living is not necessarily an increase in income, but an abundance of commodities.