The most recent financial statements for Bello Co. are shown here:

Income Statement				Balance Sheet
Sales	$	19,900		Current assets	$	11,900		Debt	$	16,300
Costs		13,600		Fixed assets		30,600		Equity		26,200
Taxable income	$	6,300		Total	$	42,500		Total	$	42,500
Taxes (23%)		1,449
Net income	$	4,851

Assets and costs are proportional to sales. Debt and equity are not. The company maintains a constant 40 percent dividend payout ratio.

What is the internal growth rate?