That depends on how long much time you have spent in Canada as PR in the last five years. If you stayed in Canada (even as visits and not continuously) for 730 days in the past five years, you may have maintained your PR status. Otherwise, IRCC likely considered you have relinquished PR status. If I were you, I would start sending an email or calling IRCC to get info on your PR status. If they say your PR status is still valid, then things get a lot easier. Otherwise, your children or grandchildren will have you sponsor you.