A news release says the Hiroshima Peace Memorial had it's highest attendance since 1999 in the last twelve months. The spike in attendance was attributed to President Obama's visit to the site last May. Also, a popular, animated film about Hiroshima before and during World War II has generated interest by younger Japanese.
A display of two paper cranes folded by Obama and donated to the museum also helped generate foot traffic.
http://english.kyodonews.jp/news/2017/02/460424.html