The CPI in May 2021 was 104.19(2016=100) which increased 0.41% from the preceding month, and rose 2.33% compared with the same month of 2020.

Introduce percent change compared with the preceding month of 7 categories as follow:

1.Food group increased 1.61%.

2.Clothing group increased 0.11％.

3.Housing group increased 0.26%.

4.Transportation & Communication group increased 0.06%.

5.Health group decreased 0.07%.

6.Education & Entertainment group decreased 0.51%.

7.Miscellaneous group increased 0.22%.

The CCI was 123.82(2016=100) which increased 2.67% from the preceding month, and rose 13.87% compared with the same month of 2020.