SACRAMENTO, Ca. (CBS Sacramento) – A new study has found that Facebook’s popularity among teens has dropped again.

In the United States, the percentage of teens ages 13 to 17 who use Facebook fell to 88 percent this year according to a report based on a survey conducted by research firm Frank N. Magid Associates.

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In 2012, among that age group the drop was 95 percent and in 2013 it was 94 percent.

The study also found a decline among all the other age groups and in total, Facebook’s popularity dropped to 90 percent this year from 93 percent the past two years.

CNET reported that in October 2013, the company’s Chief Financial Officer David Ebersman stated that daily Facebook use among younger teens declined from the second to the third quarter.

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But in November 2013, Chief Operating Officer Sheryl Sandberg dismissed any concerns that Facebook is losing appeal among teens. She stated that “the vast majority of US teens are on Facebook, and the majority of US teens use Facebook almost every day.”

A different survey from research firm Forrester conducted in June found that Facebook was still the favorite social network among more than 4,500 teens aged 12 to 17 surveyed in the US.

Among those polled in Frank N. Magid’s survey, 16 percent said that Facebook was trendy, 18 percent said that it was fun and 16 percent said it was informative. However, only 9 percent said it was safe and 9 percent said it was trustworthy.

Magid’s survey was conducted this past September and reached 1,934 people. Only people with smartphones were surveyed.

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Survey members apart of this study are only a tiny fraction of the total population of Facebook users worldwide since there’s over 1 billion.