diff --git a/config.jsonc b/config.jsonc
index 1a8682e..a694e29 100644
--- a/config.jsonc
+++ b/config.jsonc
@@ -254,6 +254,17 @@
             "sort": true,
             "value": {"key": "date", "type": "map", "map": "^(\\d{4})"}
         },
+        {
+            "id": "decade",
+            "title": "Decade",
+            "type": "string",
+            "autocomplete": true,
+            "columnWidth": 60,
+            "filter": true,
+            "find": true,
+            "sort": true,
+            "value": {"key": "date", "type": "map", "map": "^(\\d{3})", "format": "{}0s"}
+        },
         {
             "id": "series",
             "title": "Series",