revenue expenses profit The petrol is overfilled India's top tax authority is expanding its probe into bitcoin investments and transactions, and last week visited at least nine bitcoin exchanges across the country. At that time, there have been reports, tax authorities suspect there is tax evasion in this field, has started "investigation", in order to make clear the status of investors and traders and trading, the related bank account holder's identity and other details. The powerful duo from the supermodel Gisele Bundchen and NFL superstar Tom Brady are put on the first position with this ranking. After a monster year stuffed with fashion and endorsement deals, Gisele Bundchen is just about the world's first billionaire supermodel with a massive $45 million over the 12-month period. Moreover, Tom Brady wasn't also overshadowed by his more famous wife. He bought home another $31 million using a four-year symbol of $72 million contract extension in September and NFL's richest deal, putting the couple's combined annual earnings at $76 million. Modern economy, the interest rate as the price of money, not only restricted by many factors in the economic and social, and changes in interest rates to have a great impact on the economy as a whole, as a result, modern economists are studying the interest rate decision problem, pay special attention to the relationship between the variables and the balance of the economy as a whole, the interest rate decision theory has experienced the classical interest rate theory, Keynes's interest theory, interest rate in loanable funds theory and is-lm analysis as well as the contemporary evolution of dynamic interest rate model, the development process.