Government Scientific Source

$0~$10(23)
$10~$25(33)
$25~$50(43)
$50~$75(56)
$75~$100(48)
$100~$200(52)
$200~$300(43)
$300~$400(37)
$400~$500(48)
$500~$750(50)
$750~$1000(42)
$1000~$5000(143)
$5000~$10000(37)
$10000~$50000(37)
$50000~$100000(24)
$100000~$3000000(6)

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