Export User Profile Data to CSV using PowerShell

I wanted to view all user profiles in SharePoint. However, SharePoint only allows to see 50 users. I wrote the following PowerShell script which exports all user profiles.

[Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
[Reflection.Assembly]::LoadWithPartialName("Microsoft.Office.Server")
 
$siteurl = "http://mysite/"   
 
$site = New-Object Microsoft.SharePoint.SPSite($siteurl)
$context = [Microsoft.Office.Server.ServerContext]::GetContext($site)
$upm = New-Object Microsoft.Office.Server.UserProfiles.UserProfileManager($context)


$upm.Count;
$profiles = $upm.GetEnumerator()
foreach ($userobject in $Profiles )
{
 $ln = $userobject.item("Lastname")
 $fn = $userobject.item("Firstname")
    $account = $userobject.item("AccountName")
 $user = $userobject.item("PreferredName")
 $office = $userobject.item("Office")
 Write-output "$fn;$ln;$user;$account;$office"
}
$site.Dispose()