I.-In metropolitan France, the special allocation provided for in article L. 2335-1 is made up of two parts and two increases:
1° The first part is allocated to municipalities with fewer than 1,000 inhabitants whose per capita financial potential, as defined in article L. 2334-4, is less than the average per capita financial potential of municipalities with fewer than 1,000 inhabitants, increased by 25%;
2° A second part is allocated in addition to that mentioned in 1°:
a) To municipalities benefiting from the first part whose population, as it results from the last census, is less than 200 inhabitants and whose per capita financial potential, as defined in article L. 2334-4, is less than the average per capita financial potential of municipalities with fewer than 1,000 inhabitants, increased by 25%. For these municipalities, the amount of the allocation paid under this second part is equal to the amount paid under the first part;
b) Municipalities receiving the first part whose population, as determined by the last census, is between 200 and 500 inhabitants and whose per capita financial potential, as defined in article L. 2334-4, is less than the average per capita financial potential of municipalities with fewer than 1,000 inhabitants, increased by 25%. For these municipalities, the amount of the allocation under the second part is equal to 50% of the amount paid under the first part;
3° The first increase corresponding to the compensation mentioned in the second paragraph of article L. 2123-18-2 is allocated to municipalities with a population of less than 3,500 inhabitants, according to the scale defined in article D. 2335-1-1 ;
4° The second increase corresponding to the compensation mentioned in the third paragraph of Article L. 2123-34 and the last paragraph of Article L. 2123-35 is paid to municipalities with a population of less than 3,500 inhabitants, according to the scale defined in Article D. 2335-1-1.
II.-For the application of this article:
1° The population taken into account is, unless otherwise stated, that defined in article L. 2334-2;
2° The allocation paid under the first part to each beneficiary commune in mainland and overseas France is equal to the ratio between the amount of the special allocation provided for this purpose, up to the amount mentioned in article 82 of finance law no. 2018-1317 of 28 December 2018 for 2019, and the number of beneficiary communes in mainland and overseas France ;
3° For the application of 3° and 4° of I of this article, the population used is the total population, obtained by adding the municipal population and the population counted separately, as taken into account at the time of the last general renewal of the municipal councils. By way of derogation, a new commune may receive a sum in respect of these two increases from the first calendar year following its creation. In this case and until the next general renewal of the municipal councils following this creation, the total population taken into account for the application of this paragraph to this new commune is the sum of the respective total populations of the former communes on the date of creation of the new commune.