curl -XGET "http://.../vcrm-corpus-117/fiche/_search?pretty" -d'
{
"facets": {
"0": {
    "date_histogram": {
        "field": "fiche.Date_de_Réponse",
        "interval": "year"
  },
    "global": true,
    "facet_filter": {
    "fquery": {
        "query": {
            "filtered": {
                "query": {
                    "query_string": {
                        "query": "*"
                        }
                     },
                "filter": {
                    "bool": {
                        "must": [
                            {
                              "match_all": {}
                            }
                          ]
                    }
              }
        }
      }
    }
  }
 }
},
"size": 0
}'

{
   "took": 34,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
},
   "hits": {
      "total": 119585,
      "max_score": 0,
      "hits": []
   },
   "facets": {
      "0": {
         "_type": "date_histogram",
         "entries": [
            {
               "time": 1420070400000,
               "count": 122806
            },
            {
               "time": 1451606400000,
               "count": **108266**
            }
         ]
      }
   }
}

curl -XGET "http://..../vcrm-corpus-117/fiche/_search?pretty" -d'
{
  "facets": {
    "0": {
      "query": {
        "filtered": {
          "query": {
            "query_string": {
              "query": "*"
            }
          },
          "filter": {
            "bool": {
              "must": [
                {
                  "range": {
                    "fiche.Date_de_Réponse": {
                      "from": 1420070400000,
                      "to": 1451606400000
                    }
                  }
                }
              ]
            }
          }
        }
      }
    }
  },
  "size": 0
}'

{
   "took": 6,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
   },
   "hits": {
      "total": 119585,
      "max_score": 0,
      "hits": []
   },
   "facets": {
      "0": {
         "_type": "query",
         "count": 61761
      }
   }
}