顯示Sharepoint未完成問卷調查

我已經使用「網頁分隔符」類型問題創建了Sharepoint調查問卷。但是，即使我是農場管理員，我也無法查看不完整調查的回覆。我需要顯示參與者的總人數以及他們中有多少人蔘與調查，其中有多少人不完整。顯示Sharepoint未完成問卷調查

I have run this PowerShell. It does not work me, because $unPublishedEntries.Count is always zero 
$unPublishedEntries.Count=0 
$survey.ItemCount=56 
$survey.Items.Count=3 



    $web = Get-SPWeb "http://portal.tracy.com/sites/GD/" 
$survey = $web.lists["Survey"] 
$unPublishedEntries = $survey.Items | ? {-not $_.HasPublishedVersion} 

Write-Host "Surveys in list: " $survey.ItemCount 
Write-Host "Of which entries are incomplete: " $unPublishedEntries.Count 

Foreach ($entry in $unPublishedEntries) 
{ 
    Write-Host $entry["Author"] 
}

爲什麼我看不到（56-3）53位用戶？

而且，我已經運行此查詢檢查數據庫