Influencers

Distributions of each blood types are influenced by time, sex etc.

Distribution of Lower House Members in Japan

When economic crises hit Japan, O members decreased but A increased. A is a good defender.

Date	Type O	Type A	Type B	Type AB
Sep-72	37.6%	29.6%	18.2%	14.6%
Sep-76	36.0%	30.9%	18.3%	14.8%
May-80	35.9%	32.6%	18.5%	12.9%
Sep-83	32.1%	34.5%	20.1%	13.3%
May-86	32.2%	36.0%	19.1%	12.6%
Feb-90	31.1%	38.1%	18.3%	12.8%
Jun-93	30.0%	36.0%	22.1%	11.9%
Aug-96	30.8%	35.7%	20.9%	12.6%
May-00	29.1%	36.4%	23.1%	11.3%
Aug-03	29.6%	34.4%	23.1%	12.9%
Aug-05	26.7%	35.6%	25.9%	11.9%
Aug-09	27.2%	39.5%	23.0%	10.3%
Sep-12	29.3%	39.4%	20.4%	11.0%
Sep-14	27.4%	38.4%	23.1%	11.0%
Oct-17	25.5%	38.5%	24.8%	11.2%
Avg. Japan	30.7%	38.1%	21.8%	9.4%

Source: Masayuki Kanazawa (2018)

Blood Type and Personality 3.0 -- Reality Proved by over 300,000 People and AI

Distribution of Professional Golfers

Strong male B players vs strong female A players.

Top 20 Career Earnings of Japanese Professional Golfers (2017)

Sex	Type O	Type A	Type B	Type AB
Male	7	4	8	1
Female	2	11	5	2

Source: The Japan Golf Tour Organization and the Ladies Professional Golfers' Association of Japan