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CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (USD $) | Total USD ($) | Subtotal | Class A USD ($) | Class B USD ($) | General Partnership USD ($) | Treasury Units
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2011 | $ (21,310,852) |  | $ (17,052,134) | $ (4,045,783) | $ (212,935) |
Balance (in units) at Dec. 31, 2011 | 131,484 | 180,225 | 144,180 | 34,243 | 1,802 | 48,741
Increase (Decrease) in Partners' Capital |  |  |  |  |  |
Distribution to Partners | (1,971,689) |  | (1,577,351) | (374,621) | (19,717) |
Stock Buyback | (69,379) |  | (55,778) | (12,921) | (680) |
Stock Buyback (in units) | (86) |  |  |  |  | 86
Net Income | 1,674,214 |  | 1,339,372 | 318,101 | 16,742 |
Balance at Jun. 30, 2012 | (21,677,705) |  | (17,345,891) | (4,115,224) | (216,590) |
Balance (in units) at Jun. 30, 2012 | 131,398 | 180,225 | 144,180 | 34,243 | 1,802 | 48,827
Balance at Dec. 31, 2012 | (22,515,678) |  | (18,017,082) | (4,273,666) | (224,929) |
Balance (in units) at Dec. 31, 2012 | 130,444 | 180,225 | 144,180 | 34,243 | 1,802 | 49,781
Increase (Decrease) in Partners' Capital |  |  |  |  |  |
Distribution to Partners | (1,950,596) |  | (1,560,476) | (370,614) | (19,506) |
Stock Buyback | (399,487) |  | (321,240) | (74,335) | (3,912) |
Stock Buyback (in units) | (404) |  |  |  |  | 404
Net Income | 5,370,742 |  | 4,296,594 | 1,020,441 | 53,707 |
Balance at Jun. 30, 2013 | $ (19,495,018) |  | $ (15,602,204) | $ (3,698,174) | $ (194,640) |
Balance (in units) at Jun. 30, 2013 | 130,040 | 180,225 | 144,180 | 34,243 | 1,802 | 50,185

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