Reports required under this chapter shall be filed during the calendar month following each calendar month during any part of which the legislature was in session and during the month following each calendar quarter when the legislature was not in session. However, if a lobbyist registered under this chapter has declared that the lobbyist seeks only to influence administrative action and not legislative action the lobbyist need only file a report required under this chapter for each calendar quarter. The period covered shall be the calendar month or the calendar quarter, as applicable, and shall in any event cover the period from the date of the last report filed under this chapter to the date of the end of the calendar month or quarter, as applicable, for which the report is being filed. The period covered shall not include any months covered in previous reports filed by the same person. When total amounts are required to be reported, totals shall be stated both for the period covered by the statement and for the entire calendar year to date.