How many years has the actual payment month of endowment insurance been 343?

The column of the number of months actually paid in the social security payment year refers to the number of months you actually paid the endowment insurance in the statistical payment year.

For example, from 20 15, 1 month to September, you actually paid for 9 months, so you should actually pay for 9 months. By the end of the year, it is 12 months, and your actual payment is 10 months, so your actual payment is 10 months, not 12 months, which is equivalent to two arrears.