salient features for the year ended 30 June 1 Decrease in effective tax rate as a result of the absence of competition-related administrative penalties and lower share-based payment expenses, both  of which are not deductible for tax. 88 2010 2009 Selected ratios Return on equity %  17,9   17,0  Return on total assets %  16,9   18,7  Operating margin %  19,6   17,9  Finance expense cover times  14,3   12,3  Dividend cover times 2,6  2,8  Share statistics Total shares in issue million  667,7   665,9  Treasury shares (share repurchase programme) million  8,8   8,8  Weighted average number of shares million  597,6   596,1  Diluted weighted average number of shares million  615,5   614,0  Share price (closing) Rand  274,60   269,98  Market capitalisation Rm  183 350   179 780  Net asset value per share Rand  159,00   141,14  Dividend per share Rand  10,50   8,50  – interim Rand  2,80   2,50  – final Rand 7,70  6,00  Other financial information Total debt (including bank overdraft)  – interest bearing Rm 15 047  17 814   – non-interest bearing Rm  725   643  Finance expense capitalised Rm  58   34  Capital commitments Rm 46 497  25 309  – authorised and contracted  Rm 31 553  22 492  – authorised, not yet contracted  Rm 35 769  17 038  – less expenditure to date Rm  (20 825)   (14 221)  Guarantees and contingent liabilities – total amount Rm 22 003  29 545  – liability included in the statement of financial position Rm 10 288  12 795  Significant items in operating profit  – employee costs Rm 17 546  17 532  – depreciation and amortisation of non-current assets Rm 6 712  6 245  – operating lease charges Rm 1 015  1 111  – share-based payment expenses Rm  943  3 325  Directors’ remuneration Rm 59  50  Share options granted to directors – cumulative 000  914   946  Share appreciation rights with no performance targets granted to directors – cumulative 000  215   215  Share appreciation rights with performance targets granted to directors – cumulative 000  43   – Medium term incentive rights granted to directors – cumulative 000  10   – Sasol Inzalo share rights granted to directors – cumulative 000  50   75  Effective tax rate 1  %   29,9   43,3  Number of employees  number 33 339  33 544  Average crude oil price – dated Brent US$/barrel  74,37   68,14  Average rand/US$ exchange rate 1US$ = Rand  7,59   9,04  Closing rand/US$ exchange rate 1US$ = Rand  7,67   7,73 