putting Israel in the mid-range of expatriate rates among the 175 OECD countries examined in 2005. According to the 2001 undertaking of the National Jewish Population Survey, 4.3 million American Jews have some sort of strong connection to the Jewish community, whether religious or cultural. Distribution of Jewish Americans According to the North American Jewish Data Bank the 104 counties and independent cities with the largest Jewish communities, as a percentage of population, were: Assimilation and population changes These parallel themes have facilitated the extraordinary economic, political, and social success of the American Jewish community, but also have contributed to widespread cultural assimilation. More recently however, the propriety and degree of assimilation has also become a significant and controversial issue within the modern American Jewish community, with both political and religious skeptics. While not all Jews disapprove of intermarriage, many members of the Jewish community have become concerned that the high rate of interfaith marriage will result in the eventual disappearance of the American Jewish community. Intermarriage rates have risen from roughly 6% in 1950 and 25% in 1974, to approximately 40–50% in the year 2000. By 2013, the intermarriage rate had risen to 71% for non-Orthodox Jews. This, in combination with the comparatively low birthrate in the Jewish community, has led to a 5% decline in the Jewish population of the United States in the 1990s. In addition to this, when compared with the general American population, the American Jewish community is slightly older. A third of intermarried couples provide their children with a Jewish upbringing, and doing so is more common among intermarried families raising their children in areas with high Jewish populations. The Boston area, for example, is exceptional in that an estimated 60% of children of intermarriages are being raised Jewish, meaning that intermarriage would actually be contributing to a net increase in the number of Jews. As well, some children raised through intermarriage rediscover and embrace their Jewish roots when they themselves marry and have children. In contrast to the ongoing trends of assimilation, some communities within American Jewry, such as Orthodox Jews, have significantly higher birth rates and lower intermarriage rates, and are growing rapidly. The proportion of Jewish synagogue members who were Orthodox rose from 11% in 1971 to 21% in 2000, while the overall Jewish community declined in number. In 2000, there were 360,000 so-called "ultra-orthodox" (Haredi) Jews in USA (7.2%). The