| Period Ending | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Net Income | 293,346 | 314,978 | 198,383 | 310,907 |
| Operating Activities, Cash Flows Provided By or Used In |
| Depreciation | 246,513 | 216,013 | 201,925 | 197,693 |
| Adjustments To Net Income | 218,193 | 81,343 | 36,716 | -80,968 |
| Changes In Accounts Receivables | -568,757 | -409,314 | -7,825 | 101,112 |
| Changes In Liabilities | 247,874 | 167,661 | -43,434 | 160,328 |
| Changes In Inventories | -28,131 | 14,110 | -9,905 | -33,524 |
| Changes In Other Operating Activities | -51,519 | -14,221 | 12,498 | -5,808 |
| Total Cash Flow From Operating Activities | 358,789 | 371,891 | 389,714 | 650,991 |
| Investing Activities, Cash Flows Provided By or Used In |
| Capital Expenditure | -293,595 | -244,651 | -212,555 | -209,968 |
| Investments | -32,204 | 9,261 | -5,557 | -10,412 |
| Other Cash flows from Investing Activities | 714 | 1,175 | -5,534 | 825,590 |
| Total Cash Flows From Investing Activities | -402,670 | -572,084 | -270,459 | 518,263 |
| Financing Activities, Cash Flows Provided By or Used In |
| Dividends Paid | - | - | - | - |
| Sale Purchase of Stock | - | - | - | - |
| Net Borrowings | 447,814 | 299,790 | -125,136 | 410,652 |
| Other Cash Flows from Financing Activities | -6,014 | -3,508 | -761 | -22,710 |
| Total Cash Flows From Financing Activities | -16,570 | 227,764 | -133,836 | -1,227,844 |
| Effect Of Exchange Rate Changes | -68 | 1,794 | 220 | -3,154 |
| Change In Cash and Cash Equivalents | -60,519 | 29,365 | -14,361 | -61,744 |