diff --git a/Gemfile.lock b/Gemfile.lock
index affe604f2..03b1cae13 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
       latex-decode (~> 0.0)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
-    bolognese (1.5.16)
+    bolognese (1.5.17)
       activesupport (>= 4.2.5)
       benchmark_methods (~> 0.7)
       bibtex-ruby (>= 5.1.0)
diff --git a/app/models/doi.rb b/app/models/doi.rb
index e7ebf824a..1fd62c31f 100644
--- a/app/models/doi.rb
+++ b/app/models/doi.rb
@@ -527,8 +527,35 @@ def self.query_aggregations
     {
       resource_types: { terms: { field: 'resource_type_id_and_name', size: 16, min_doc_count: 1 } },
       states: { terms: { field: 'aasm_state', size: 3, min_doc_count: 1 } },
-      years: { date_histogram: { field: 'publication_year', interval: 'year', format: 'year', order: { _key: "desc" }, min_doc_count: 1 },
-               aggs: { bucket_truncate: { bucket_sort: { size: 10 } } } },
+      years: { 
+        # filter: { 
+        #   range: { 
+        #     "publication_year": { 
+        #       "gte": "2000"
+        #     }
+        #   }
+        # },
+        # aggs: {
+        #   published: {
+            date_histogram: {
+              field: 'publication_year', 
+              interval: 'year', 
+              format: 'year', 
+              order: { 
+                _key: "desc"
+              }, 
+              min_doc_count: 1
+            },
+            # aggs: {
+            #   bucket_truncate: {
+            #     bucket_sort: {
+            #       size: 10
+            #     }
+            #   }
+            # }
+        #   }
+        # }
+      },
       registration_agencies: { terms: { field: 'agency', size: 10, min_doc_count: 1 } },
       created: { date_histogram: { field: 'created', interval: 'year', format: 'year', order: { _key: "desc" }, min_doc_count: 1 },
                  aggs: { bucket_truncate: { bucket_sort: { size: 10 } } } },