Notice how they reused the poster from the previous revision in 2014.
<p>2014: 1000→1080JPY
2019: 1080→1200JPY
</p>
which is much more than the tax hike each time.
<a href="//commons.wikimedia.org/wiki/User:Syced" title="User:Syced">Syced</a>
<span class="int-own-work" lang="en">Own work</span>