Notes to the consolidated financial statements - Note 17     2013 R'000     2012 R'000   17. Interest in associates             Listed associates 767 551     666 759         Net asset value at acquisition 569 508     492 206         Inherent goodwill 463 843     445 353         Provision for impairment (265 800)     (270 800)     Unlisted associates 103 081     156 751         Net asset value at acquisition 72 030     92 469         Inherent goodwill 31 051     64 282     Investments in associates at cost less impairments 870 632     823 510     Attributable share of post-acquisition reserves of associates 279 028     188 476         At beginning of year 188 476     139 861         Share of current year earnings net of dividends 97 358     33 565         Share of movement of other reserves 3 516     15 557         Reversal of prior year reserves on becoming subsidiary, disposal or change in shareholding (10 322)     (507)     Advances 50 219     77 872       1 199 879     1 089 858     Advances to associates bear interest at rates of between 0% and 11% (2012: 0% and 11%) and have no fixed terms of repayment.             Market value of listed associates 993 280     772 500     Directors’ valuation of unlisted associates 396 666     440 197       1 389 946     1 212 697     Summarised aggregated financial information of associates:             Income statement             Revenue 11 747 907     8 387 064     Operating profit 745 495     357 473     Net finance charges (69 788)     (8 914)     Profit before taxation 675 707     348 559     Taxation (200 119)     (120 382)     Profit for the year 475 588     228 177     Statement of financial position             Assets                 Property, plant and equipment and intangible assets 3 720 705     2 733 935         Investments 32 319     52 647         Net current assets 809 007     693 930       4 562 031     3 480 512     Equity and liabilities                 Capital and reserves 2 725 001     2 715 626         Deferred taxation 89 691     55 992         Borrowings 1 747 339     708 894       4 562 031     3 480 512     Details of major associates are reflected on page 154 of this report. Notes to the consolidated financial statements - Note 17