The National Rifle Association’s (NRA) political arm in March experienced its biggest fundraising month in 15 years, according to Federal Election Commission (FEC) filings.

The NRA’s Political Victory Fund brought in $2.4 million during the month, marking the most money raised by the fund since June of 2003.

The majority of the donations originated from small donors who gave less than $200 to the organization.

The total amount of money raised in March is $1.5 million more than what the fund brought in during the same time period in 2017, and $1.6 million more than it in February.