2012

2011

2010

Numerator for basic and diluted earnings per share:

Net income

$

5,214,973

$

3,699,066

$

4,506,215

Denominator:

Denominator for basic earnings per share:

Weighted average shares

2,892,956

2,777,820

2,737,790

Effect of dilutive securities:

Employee stock options

53,647

61,472

103,343

Denominator for diluted earnings per share:

Adjusted weighted average shares and assumed conversions

2,946,603

2,839,292

2,841,133

Net income per share:

Basic

$

1.80

$

1.33

$

1.65

Diluted

$

1.77

$

1.30

$

1.59