显示Sharepoint未完成问卷调查

我已经使用“网页分隔符”类型问题创建了Sharepoint调查问卷。但是，即使我是农场管理员，我也无法查看不完整调查的回复。我需要显示参与者的总人数以及他们中有多少人参与调查，其中有多少人不完整。显示Sharepoint未完成问卷调查

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"] 
}

为什么我看不到（56-3）53位用户？

而且，我已经运行此查询检查数据库