Government Scientific Source

$0~$10(1)
$10~$25(4)
$25~$50(4)
$50~$75(17)
$75~$100(41)
$100~$200(90)
$200~$300(62)
$300~$400(60)
$400~$500(52)
$500~$750(103)
$750~$1000(71)
$1000~$5000(647)
$5000~$10000(308)
$10000~$50000(424)
$50000~$100000(52)
$100000~$3000000(22)

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