Number of passengers with the Lake Lucerne steam shipping company (VDGV, later DGV, now SGV) from 1870 to 1914. Own graph, numbers according to anniversary publication 1970.
<a href="//commons.wikimedia.org/wiki/User:Gestumblindi" title="User:Gestumblindi">Gestumblindi</a>
<span class="int-own-work" lang="en">Own work</span>