`PriceIncreaseMaintenanceExpensesPercentage` for the current period MUST exist at least once. `PriceIncreaseMaintenanceExpensesPercentage` for the fifth period MUST exist at least once. `PriceIncreaseMaintenanceExpensesPercentage` for the first period MUST exist at least once. `PriceIncreaseMaintenanceExpensesPercentage` for the fourth period MUST exist at least once. `PriceIncreaseMaintenanceExpensesPercentage` for the second period MUST exist at least once. `PriceIncreaseMaintenanceExpensesPercentage` for the third period MUST exist at least once. `PriceIncreaseVariableExpensesPercentage` for the current period MUST exist at least once. `PriceIncreaseVariableExpensesPercentage` for the fifth period MUST exist at least once. `PriceIncreaseVariableExpensesPercentage` for the first period MUST exist at least once. `PriceIncreaseVariableExpensesPercentage` for the fourth period MUST exist at least once. `PriceIncreaseVariableExpensesPercentage` for the second period MUST exist at least once. `PriceIncreaseVariableExpensesPercentage` for the third period MUST exist at least once.