You can add a year field in your posts and then
<h2>2014</h2>
<ul class="posts-in-year">
{% for post in (site.categories.journal | where: "year","2014" | sort: 'date') %}
<li><p><a href="{{ post.url | prepend: site.baseurl }}">
{{ post.title }}</a> — {{ post.date | date: "%B %d" }}</p>
</li>
{% endfor %}
</ul>