Idaho's state endowment investments grew by 2 percent in August, investment manager Larry Johnson reported to the state Land Board today, but it's gotten better since then, he said: "So far in September things have been very good - we've earned almost 3 percent for the month, so as of yesterday, our fiscal year-to-date returns were up to 6.6 percent." That's up from a 3.4 percent gain for the fiscal year as of the end of August. On Aug. 31, the state's endowment fund was worth $1.3 billion.