Tsulimoto, as always, made an excellent point. I found two articles online, in the first one Japanese housewives are called "invisible puppet-masters of Japan's economy", and the second one says "Because they’re charged with household finances, housewives can tell where Japan’s economy is going.”
Both articles refer to "hesokuri", the cash and investments that housewives stash without telling their husbands.
Another interesting quote: "The Sompo survey also reveals alarming insights into why the housewives are so attached to their secret money: a good proportion are hiving-off the funds in the hope that they can secure a divorce at about the age of 50 and enjoy their late middle age in financial comfort and away from their husbands."
An average Japanese housewife has $37 700 hesokuri.
Japan has a total population of 126,475,664 people. Age structure:
0-14 years: 13.1% (male 8,521,571/female 8,076,173)
15-64 years: 64% (male 40,815,840/female 40,128,235)
65 years and over: 22.9% (male 12,275,829/female 16,658,016) (2011 est.)
Number of women of marital age is roughly 50 million. Even if only half of them are married, that's 25 million. 25 million multiplied by 37 thousand we will have close to 1 trillion dollars. 1 trillion dollars of hesokuri!
How much money do Japanese housewives give to SGI without telling their husbands? Are the husbands in Japan aware that their wives finance the world's richest cult?
I bet all SGI Japan leaders of all levels from city to district leaders have a directive to give Japanese housewives guidance to sacrifice some part of their hesokuri money for SGI.