Yes and no. All incoming and outgoing correspondence is kept on a public record and can be requested. So if you send in a request per e-mail or post, it can be

Yes and no. All incoming and outgoing correspondence is kept on a public record and can be requested. So if you send in a request per e-mail or post, it can be accessed. But you can still can in anonymously or walk in to their office and request it physically, without having to identify yourself. Source: Used to work as a journalist in Sweden, dealt a lot with requesting information from governmental and military organizations. Everyones's reported income, address, date of birth, family and a whole lot more information is publicly available on request. If you have particular reasons (e.g. threat of violence), you can request to have your identity hidden and exempt from public disclosure.