If you buy old-age insurance regularly or manage money in a small bank, you will get 4.5 to 5 points every year. Half a year is over 90.
If you buy a pure debt base, it will be as much as 6 to 10 every year. Then there will be 120 to more than 200 in half a year.
If you are buying stocks, bonds or stock bases. This depends on the stock market again. This fluctuation is relatively large, and the income is hard to say.