As judged by Grok, when asked on or as soon after 2026-01-01 as I can manage. If Grok won't answer, as judged by some other research-capable AI of my choice, likely starting with Claude and continuing until I find one that will answer. (If I'm not available, mods are welcome to do their best to judge in this spirit.) First answer that provides both a single headline number and at least a little justification.

Status quo answer is 42 grams.