That time period is beyond the scope of our report. However, I would say that one year is definitely better than what we have now, which is nothing. I completely agree with you.
Given that the marginal additional costs of keeping that record once it has been put together for perhaps a longer period may not be too onerous on parties and service providers, and may give more time for issues and events to come to the surface after an election. I'd be open-minded about it being longer than one year.