If you've been watching the fund, it sat at about 14% used all year last year, BEFORE any LEAFs were delivered. That is because it is not a LEAF fund, it is a clean vehicle fund. Some of the money went to Tesla owners, there were a few Honda fuel cell hydrogen cars, and if you look at the vehicle list, there are some others as well. Since the recent LEAF deliveries, it has gone from 14% to 19% used.
Remember also, there is an additional $5 million that has been approved for the fund, so the percentage used is more like 7 or 8% of the total. I haven't heard from the Center as to why they haven't added the additional $5 million to the status page.