public List<UserGrowthStats> GetUserGrowthStats(DateTime f, DateTime t)
{
//var cacheHelper = new CacheHelper(HttpContext.Current.Cache);
//var data = cacheHelper.Get(CacheKey.ToString(CultureInfo.InvariantCulture)) as List<UserGrowthStats>;
//if (data == null)
//{
var ss = new StatsService();
var data = ss.FindUserGrowthStats(f, t);
//cacheHelper.Add(CacheKey.ToString(CultureInfo.InvariantCulture), data, DateTime.Now.AddMinutes(CacheExpiry));
//}
return data;
}