Apportionment of net annual value
9. The net annual value specified in Article 6 or determined in accordance with Article 7 shall for each year be apportioned among the districts in accordance with the formula:–
where –
A is the net annual value for that year;
B is the total length of railway track in the district in question as at 31st March in the relevant preceding year, measured in kilometres, which is occupied by the Company and used primarily for the conveyance of railway traffic; and
C is the total length of railway track in Northern Ireland as at 31st March in the relevant preceding year, measured in kilometres, which is occupied by the Company and used primarily for the conveyance of railway traffic.