Table 4. Average number of top 300 professional players per period for specific world region (the total number of players in a specific period divided by the number of years in a period).

Period	Africa	Asia	Central America	Europe	North America	Oceania	South America
P1	14.8	10	3.4	100.2	98.2	45	28.2
P2	9.4	3.4	2.4	88.2	80.8	23.6	31.8
P3	12.2	4.2	5.6	139.8	78	21.4	38.4
P4	12.2	4.8	7	165	51.6	19.4	38.4
P5	12.8	8.4	4.8	183.6	32.4	18.4	33
P6	7.8	14	3.2	194.6	28.2	9.4	39.8
P7	5	15	2.25	196	29.5	8.75	43.75