Question: According to Pew Research in 2015, what percentage of the U.S population self-identified with this Protestant Christian denomination that Lakeland University is affiliated with?

Context articles: Caspar Erich Schieler
Christian population growth
Lakeland University
Pew Research Center
Presbyterian Church (USA)
Religion in Argentina
Evangelical Lutheran Church in America
Lakeland University Japan Campus
United Church of Christ
United Church of Canada

Caspar Erasmus (Erich) Schieler (July 14, 1851 – January 13, 1934) was a German theologian, church historian and priest in the late 19th century and early 20th century.
 According to documents provided by Mainz Cathedral and the Diocesan Seminary, Schieler studied philosophy and theology at the Episcopal Seminary in Mainz (Closed during the Kulturkampf in 1878), receiving the Doctor of Divinity degree.
 Schieler first served as a priest at the age of twenty-five at Mainz, Cathedral ordained under Bishop Wilhelm Emmanuel von Ketteler in the year 1876.
 Due to the Kulturkampf, Schieler was interrogated by the German government and forced to pastor his parish in secret, to avoid further attention.
 While secretly pastoring in Weisskirchen, Schieler began working on his dissertation: "Magister Johannes Nider", for which he received the degree of Doctor of Theology, Magna cum Laude in Wurzburg, Germany in the year 1886.
 Schieler then become the Professor of Moral Theology at Diocesan Seminary of Mainz in Baden-Württemberg.
 After breaking from The Catholic Church and converting to Protestantism, Schieler continued writing books and became a pastor in the Lutheran Church, which later merged into the United Church of Christ, a mainline Protestant Christian denomination, with historical confessional roots in the Reformed, Congregational and Lutheran traditions.
 Schieler served as a Professor of theology and Latin American and German language and literature at the Mission House College, which later became Lakeland University.
 At the request of the Educational Department, Schieler later took up a teaching position at Redfield College, teaching theology in Redfield, South Dakota.
 Schieler was then called upon by the German Evangelical Synod of North America, to teach and preach in communities in Hartsburg, Missouri, Hamel and Johannisburg, Illinois and Marion, Wisconsin.
Christian population growth is the population growth of the global Christian community.
 According to a 2011 Pew Research Center survey, there were 2.19 billion Christians around the world in 2010, more than three times as much from the 600 million recorded in 1910.
 According to a 2015 Pew Research Center study, by 2050, the Christian population is expected to be 2.9 billion.
Lakeland University is a liberal arts college located west of Howards Grove, Wisconsin in the Town of Herman, and uses a Plymouth mailing address.
 Lakeland University is affiliated with the United Church of Christ and offers both undergraduate and graduate degrees.
The Pew Research Center is a nonpartisan American think tank based in Washington, D.C. It provides information on social issues, public opinion, and demographic trends shaping the United States and the world.
 It also conducts public opinion polling, demographic research, media content analysis, and other empirical social science research.
 The Pew Research Center does not take explicit policy positions, and is a subsidiary of The Pew Charitable Trusts.
The Presbyterian Church (USA), or PC(USA), is a mainline Protestant Christian denomination in the United States.
 A part of the Reformed tradition, it is the largest Presbyterian denomination in the U.S., and known for its relatively progressive stance on doctrine.
 The PC(USA) was established by the 1983 merger of the Presbyterian Church in the United States, whose churches were located in the Southern and border states, with the United Presbyterian Church in the United States of America, whose congregations could be found in every state.
 The similarly named Presbyterian Church in America is a separate denomination whose congregations can also trace their history to the various schisms and mergers of Presbyterian churches in the United States.
Argentina, for much of its history and including the present day, has been an overwhelmingly Christian country.
 The largest Christian denomination in the country is Roman Catholicism.
 The historical background is very much due to the Spanish influence brought about through the newly conquered territories.
 However, immigration throughout the 20th century has brought other Catholics and denominations from various regions to Argentina.
 Overall, a 2008 survey found that 24% attended religious services regularly, and that 10.3% described themselves as atheist, agnostics, or having no religion.
 Only 35% of Argentines consider religion to be very important in their lives according to a 2015 Pew Research Center report.
The Evangelical Lutheran Church in America (ELCA) is a mainline Protestant denomination headquartered in Chicago, Illinois.
 The ELCA officially came into existence on January 1, 1988, by the merging of three Lutheran church bodies.
 s of 2016 , it has approximately 3.6 million baptized members in just over 9,200 congregations.
 In 2015, Pew Research estimated that 2.1% of the U.S population self-identifies with the ELCA and mainline Lutheranism.
 It is the seventh-largest religious body and the largest Lutheran denomination in the United States.
 The next two largest Lutheran denominations are the Lutheran Church–Missouri Synod (LCMS) (with approximately 2.1 million members) and the Wisconsin Evangelical Lutheran Synod (WELS) (with approximately 370,000 members).
 There are also many in the United States, some of which came into being composed of dissidents following the major 1988 merger.
 The ELCA belongs to the World Council of Churches and the Lutheran World Federation.
 The ELCA is in full communion with the Episcopal Church, Moravian Church, Presbyterian Church (USA), Reformed Church in America, United Church of Christ, and the United Methodist Church.
Lakeland University Japan (レイクランド大学ジャパン・キャンパス ) is a two-year liberal arts college located in the Shinjuku ward of Tokyo, Japan and is a branch campus of Lakeland University in Sheboygan, Wisconsin, U.S. Since its inception in 1991, Lakeland University Japan (LUJ) has been continuously accredited by America's North Central Association of Colleges and Schools and the MEXT (文部科学省).
 After earning a two-year Associate of Arts (A.A.) degree, students can choose to attend Lakeland University or various universities located around the world to complete a four-year Bachelor of Arts (B.A.) degree.
The United Church of Christ (UCC) is a mainline Protestant Christian denomination, with historical confessional roots in the Reformed, Congregational and Evangelical Protestant traditions, and "with over 5,000 churches and nearly one million members".
 The United Church of Christ is a historical continuation of the General Council of Congregational Christian churches founded under the influence of New England Puritanism.
 The Evangelical and Reformed Church and the General Council of the Congregational Christian Churches united in 1957 to form the UCC.
 These two denominations, which were themselves the result of earlier unions, had their roots in Congregational, Christian, Evangelical, and Reformed denominations.
 At the end of 2014, the UCC's 5,116 congregations claimed 979,239 members, primarily in the United States.
 In 2015, Pew Research estimated that 0.4 percent, or 1 million adult adherents, of the U.S population self-identify with the United Church of Christ.
The United Church of Canada (French: "Église unie du Canada" ) is a mainline Reformed denomination and the largest Protestant Christian denomination in Canada, and the largest Canadian Christian denomination after the Catholic Church.
 In 2011, Statistics Canada reported approximately 2 million people identifying as adherents.
 The United Church was founded in 1925 as a merger of four Protestant denominations with a total combined membership of about 600,000 members: the Methodist Church, Canada, the Congregational Union of Ontario and Quebec, two-thirds of the congregations of the Presbyterian Church in Canada, and the Association of Local Union Churches, a movement predominantly of the Canadian Prairie provinces.
 The Canadian Conference of the Evangelical United Brethren Church joined the United Church of Canada on 1 January 1968.