Actually, I doubt Honest John is correct... for 15 years... not really.
he could be referring to leaked e-mail from former Takata employee, stating that Takata knew about issues as long as 8 years before it became public. Now the issue became public in 2012 and first recalls started in early 2013. So issue might existed since ~2004... not really 15 years, and as we know it just 5 years. One way or another I believe companies are not doing enough to fix it in time.
I guess this is most comprehensive view of the issue:
https://www.nytimes.com/2014/06/24/business/international/honda-nissan-and-mazda-join-recall-over-faulty-air-bags.html?_r=0