Claiming that Public Spending in Norway is “0 % open” is absurd. The government budget is available for everybody. You can type in your E-mail address, and the national budget will be sent to you as soon as it is available. After a budget period, the deviations from the budget are also made public.
Here is the current budget: http://www.statsbudsjettet.no/upload/Statsbudsjett_2017/dokumenter/pdf/stm.pdf
Similarly, the budgets and the deviations from the budgets are completely open also for counties and municipalities. E.g., here is the budget for the city Bergen: https://www.bergen.kommune.no/politikk/budsjett/budsjett-2017