--- /dev/null
+<?php
+
+namespace Drupal\views\Plugin\views\argument;
+
+/**
+ * Argument handler for a year (CCYY)
+ *
+ * @ViewsArgument("date_year")
+ */
+class YearDate extends Date {
+
+ /**
+ * {@inheritdoc}
+ */
+ protected $argFormat = 'Y';
+
+}