| 602.49 | 948.84 | 377.68 | 1,709 | 356.4 |  | 
Depreciation & Amortization      | 1,777 | 1,701 | 1,581 | 1,490 | 1,377 |  | 
 | 28.67 | 26.83 | 18.85 | 18.69 | 19.2 |  | 
Gain (Loss) on Sale of Assets      | -595.83 | -900.53 | -176.75 | -1,381 | -316.89 |  | 
 | 191.18 | 118.36 | - | - | - |  | 
 | 75.61 | 80.53 | 92.46 | 84.08 | 74.58 |  | 
Income (Loss) on Equity Investments      | 198.41 | 103.31 | 55.87 | 3.95 | 97.51 |  | 
Change in Accounts Receivable      | -342.06 | -155.32 | -272.45 | -389.12 | -72.9 |  | 
Change in Accounts Payable      | 366.73 | -224.43 | 42.11 | 62.45 | 84.36 |  | 
Other Operating Activities      | -40.72 | -64.17 | -59.22 | 103.47 | 87.41 |  | 
 | 2,261 | 1,635 | 1,659 | 1,702 | 1,707 |  | 
Operating Cash Flow Growth      | 38.34% | -1.48% | -2.52% | -0.25% | 12.73% |  | 
Acquisition of Real Estate Assets      | -2,832 | -3,526 | -2,643 | -2,521 | -2,064 |  | 
Sale of Real Estate Assets      | 1,765 | 2,620 | 271.57 | 1,691 | 564.62 |  | 
Net Sale / Acq. of Real Estate Assets      | -1,067 | -905.82 | -2,372 | -829.7 | -1,499 |  | 
 | -508 | -52.3 | -1,930 | -192.02 | -908.57 |  | 
Investment in Marketable & Equity Securities      | -215.76 | -94.47 | -296.1 | 2.67 | -144.32 |  | 
Other Investing Activities      | -115.49 | -62.52 | -101.6 | -42.67 | -47.01 |  | 
 | -1,906 | -1,115 | -4,699 | -1,062 | -2,599 |  | 
 | 3,871 | 3,740 | 8,301 | 4,346 | 3,735 |  | 
 | -3,834 | -3,406 | -4,857 | -3,602 | -2,929 |  | 
 | 37.3 | 334.35 | 3,445 | 743.87 | 806.31 |  | 
 | 3,651 | 2,207 | 928.43 | 172.1 | 1,880 |  | 
Preferred Share Repurchases      | - | - | - | -201.25 | -500 |  | 
Common & Preferred Dividends Paid      | -1,633 | -1,521 | -1,451 | -1,379 | -1,239 |  | 
 | -1,633 | -1,521 | -1,451 | -1,379 | -1,239 |  | 
Other Financing Activities      | 8.61 | -57.49 | 46.72 | 73.86 | -11.26 |  | 
Foreign Exchange Rate Adjustments      | -178.52 | 2.63 | 70.08 | -22.04 | -16.48 |  | 
 | 2,240 | 1,486 | -0.79 | 27.83 | 26.4 |  | 
 | 438.2 | 393.4 | 271.5 | 274.7 | 301.9 |  | 
 | 71.2 | 88.8 | 41.7 | 29.9 | 20.1 |  | 
 | 2,245 | 1,518 | 1,833 | 1,947 | 2,357 |  | 
 | 2,499 | 1,764 | 2,001 | 2,112 | 2,546 |  | 
Change in Working Capital      | 24.67 | -379.75 | -230.34 | -326.66 | 11.47 |  |