In recent years, the Jewish population of Israel has become the largest of any nation, reaching just under 6.6 million in 2018, according to Israel's Central Bureau of Statistics. Hebrew University demographer Sergio DellaPergola estimated the Jewish population of Israel at 6,336,400 as of 2016. The fabric of Jewish Israeli society is composed of immigrants, and descendants of immigrants, from every Jewish community in the world. The major sociocultural groups among Israeli Jews today may be sorted along religious lines (haredi [ultra-Orthodox], dati-leumi [national religious - Orthodox], masorti [traditional – non-Orthodox], and hiloni [secular]), with distinctions between large immigrant groups (e.g., Ethiopian, Russian, French, and native English-speakers) more noticeable among olim [immigrants] and their immediate descendants. The Jews in Israel show relatively high rates of involvement in religious life, with 25% reporting that they attend synagogue weekly, and another 39% reporting that they attend at least infrequently. Fifty-one percent describe themselves as observant of Jewish ritual to at least some extent, with a third of secular Israeli Jews keeping kosher in the home. Living in the historic Jewish homeland, together with Jews descended from every Jewish community around the world, engenders in Israeli Jews a vibrant sense of peoplehood. The WJC affiliate representing Israeli Jewry is World Jewish Congress-Israel, an autonomous Israeli non-profit organization. In addition, the WJC (Global) maintains a representative office to carry out activities, initiatives, and programs of the WJC.