27 In each of Years 9, 10 and 11 the Respondent's gross sales fell below those of the preceding year, the sales in Year 9 being $15,320,672.00 as compared with $17,097, 888.00 in Year 8, sales in Year 10 being $15,014,099.00 and the sales in Year 11 being $14,838,912.00. Despite the continuing fall in sales, no attempt appears then to have been made to determine whether the rent in each of Years 9, 10 and 11, if calculated in accordance with paragraphs A of each of sub-clauses (d) and (e) of clause 3 would be greater than the amount calculated in accordance with paragraph B of those sub-clauses, and the rent in fact paid appears to have been calculated in accordance with paragraph B of those sub-clauses, the rent in respect of Year 9 which was paid being $191,508.40 compared with $213,723.60 in Year 8, the rent in respect of Year 10 being $187,676.24 and the rent in respect of Year 11 being $185,486.40.
28 It would appear that, during the course of Year 12 - 1996 - the Appellants appointed a new Managing Agent for the Shopping Centre and that that new Managing Agent - Wynn Tresidder Retail Pty. Limited ("Wynn") - determined to, and in fact did, carry out such a comparison.
29 On 4 July 1996 Wynn wrote to the Respondent as follows (AB 88):
"We wish to advise that upon checking the lease of your store at Settlement City, we have found that rental has been undercharged for the years ended 3 December 1993 till 1995 inclusive, and consequently the current charge which was established at the end of the tenth year of the lease is also incorrect.
According to our calculations, during the ninth year of the lease, 'the total rent payable in Year 5 of the term hereof (less the Lessor's estimate of increased outgoings payable by the Lessee in Year 6 of the term), plus an amount equal to the percentage payable by the Lessee of which operating costs of the Centre for each year exceed those applicable to the Centre during the first year of the term', exceeded 1.25% of your sales for that year.
This circumstance also occurred during the tenth and eleventh years of the Lease, and resulted in a new rental of $206,542.92 which in addition to increases in outgoings shall become the new rental figure to apply to Years eleven through fifteen.
We enclose a copy of our work sheets for your information, which show rental amounts owing of $16,275.26 for Year 9, $18,866.68 for Year 10, and $46,879.55 for Year 11, although this last figure is subject to receiving our audited outgoings statement.
Please confirm your acceptance of the above calculations."