Will the annual increase in social security contributions for receiving disability allowance decrease year by year?

I can't. According to Article 35 of the Regulations on Work-related Injury Insurance, if an injured worker who has been identified as Grade I to Grade IV withdraws from his post, the work-related injury insurance fund will pay 75% to 90% of his salary on a monthly basis. Reach the legal retirement age, go through retirement procedures and change the basic pension. If the basic pension is lower than the disability allowance, the work injury insurance fund will make up the difference. The difference will not decrease with the adjustment of basic pension in the future. On the contrary, in some provinces and cities, the make-up policy is still based on the adjustment of basic old-age insurance premiums and the adjustment of disability allowances for workers injured at work. Therefore, receiving disability allowance will not decrease year by year because of the increase of social security contributions.