Custom sort order with jsonb key

<div class="">Dear colleagues,</div><div class=""><br class="" /></div>I have a table in PostgreSQL with some data:<br
class=""/><br class="" />create table FOO (<br class="" />    key jsonb<br class="" />);<br class="" /><br
class="Apple-interchange-newline"/>insert into FOO(key) values ('[2014]');<br class=""
/>insert into FOO(key) values ('[2015]');<brclass="" />insert into FOO(key) values ('[2016]');<br class=""
/>insert into FOO(key) values ('[2014,2]');<br class="" />insert into FOO(key) values ('[2014, 2, 3]');<br class=""
/>insert into FOO(key) values ('[2014,3]');<br class="" />insert into FOO(key) values ('[2014,2,4]');<br class=""
/>insert into FOO(key) values ('[2014,2,4]');<br class="" />insert into FOO(key) values ('[2014,3,13]');<br class=""
/>insert into FOO(key) values ('[2014,2, 15]');<div class=""><br class="" />And I try to sort these rows like that:<br
class=""/><br class="" />SELECT key FROM FOO order by key;</div><div class=""><br class="" />The result is:<br class=""
/><brclass="" />[2014]<br class="" />[2015] <==<br class="" />[2016] <==<br class="" />[2014, 2]<br class=""
/>[2014, 3] <==<brclass="" />[2014, 2, 3]<br class="" />[2014, 2, 4]<br class="" />[2014, 2, 4]<br class=""
/>[2014, 2, 15]<brclass="" />[2014, 3, 13]</div><div class=""><br class="" />But what I need is<br class="" /><br
class=""/>[2014]<br class="" />[2014, 2]<br class="" />[2014, 2, 3]<br class="" />[2014, 2, 4]<br class=""
/>[2014, 2, 4]<brclass="" />[2014, 2, 15]<br class="" />[2014, 3] <==<br class="" />[2014, 3, 13]<br class=""
/>[2015] <==<brclass="" />[2016] <==</div><div class=""><br class="" />is there a way to achieve it?</div><div
class=""><brclass="" /></div><div class="">Regards,</div><div class="">Anthony Ananich</div><div class=""><a class=""
href="http://ananich.pro">http://ananich.pro</a></div>