Question: What year did the football team inthe most educated, highest-income, and fourth largest combined statistical area in the United States join the Big Ten Conference?

Context articles: Spokane-Coeur d'Alene Combined Statistical Area
Maryland Terrapins football
1980 Purdue Boilermakers football team
El Paso–Las Cruces Combined Statistical Area
2013 All-Big Ten Conference football team
Derrick Walton
1945 Northwestern Wildcats football team
Baltimore–Washington metropolitan area
Hudson, Ohio
Zak Irvin

Spokane-Spokane Valley-Coeur d'Alene, WA-ID CSA is the United States Census Bureau's official name for the combined statistical area that includes the Spokane metro area as well as the Coeur d'Alene metro area.
 The population was 710,946 as of 2016.
 It is the 69th largest Combined Statistical Area in the United States, and is the economic and cultural center of the Inland Northwest.
 The CSA is Anchored by Spokane, and Coeur d'Alene, which are separated by suburbs that primarily follow the path of Interstate 90.
The Maryland Terrapins football team represents the University of Maryland, College Park in the sport of American football.
 The Terrapins compete in the Football Bowl Subdivision (FBS) of the National Collegiate Athletic Association (NCAA) and the Big Ten Conference.
 The Terrapins joined the Big Ten Conference on July 1, 2014, following 62 years in the Atlantic Coast Conference as a founding member.
 The Terrapins are currently coached by D. J. Durkin.
 Since 1950, the Terrapins have played their home games at Maryland Stadium in College Park, Maryland with occasional home games from time to time in Baltimore, Maryland, making them one of two FBS football teams in the Baltimore–Washington metropolitan area (Navy Midshipmen) and the closest Football Bowl Subdivision team to Washington, D.C. The team's official colors of red, white, black, and gold have been in use in some combination since the 1920s and are taken from Maryland's state flag, and the Terrapins nickname — often abbreviated as "Terps" — was adopted in 1933 after a turtle species native to the state.
 Maryland shares storied rivalries with Virginia and West Virginia.
The 1980 Purdue Boilermakers football team was an American football team that represented Purdue University during the 1980 Big Ten Conference football season.
 In their fourth season under head coach Jim Young, the Boilermakers finished in a tie for second place in the Big Ten Conference (Big Ten), compiled a 9–3 (7–1 against Big Ten opponents), defeated Missouri in the Liberty Bowl, were ranked No. 16 in the final AP Poll, and outscored all opponents by a combined total of 328 to 233.
 The team played its home games at Ross–Ade Stadium in West Lafayette, Indiana.
The El Paso–Las Cruces combined statistical area consists of two counties in western Texas and one in southern New Mexico.
 This CSA was defined as part of the United States Office of Management and Budget's 2013 delineations for metropolitan, micropolitan, and combined statistical areas.
 As of the 2015 census estimate, the CSA had a population of 1,053,267 making it the 54th largest combined statistical area in the United States.
 The statistical area consists of the metropolitan areas of El Paso, Texas and Las Cruces, New Mexico.
 This CSA has a GDP of about $33 billion and would rank 58th nationally among all CSA or metro areas.
 The total land area of the El Paso–Las Cruces combined statistical area is 9,402 sq. mi.
The 2013 All-Big Ten Conference football team consists of American football players chosen as All-Big Ten Conference players for the 2013 Big Ten Conference football season.
 The conference recognizes two official All-Big Ten selectors: (1) the Big Ten conference coaches selected separate offensive and defensive units and named first- and second-team players (the "Coaches" team); and (2) a panel of sports writers and broadcasters covering the Big Ten also selected offensive and defensive units and named first- and second-team players (the "Media" team).
 Only one Big Ten player, Darqueze Dennard of Michigan State, was also selected as a consensus first-team player on the 2013 College Football All-America Team
Derrick Walton Jr. (born April 3, 1995) is an American basketball player for the Miami Heat of the National Basketball Association (NBA), on a two-way contract with the Heat's NBA G League affiliate, the Sioux Falls Skyforce.
 Walton played college basketball for the Michigan Wolverines.
 In high school, he was a 2013 "Parade" All-American, the 2013 Michigan Boys Basketball Gatorade Player of the Year and the runner up in the 2013 Mr. Basketball of Michigan as a senior at Chandler Park Academy.
 He was a 2013–14 Big Ten Conference men's basketball season All-Freshman selection in the Big Ten for the 2013–14 team, which won the 2013–14 Big Ten Conference regular-season championship outright.
 He was a 2015–16 Big Ten Conference men's basketball season All-Big Ten third team selection by the coaches and honorable mention selection by the media as a junior.
 He was a 2016–17 Big Ten Conference men's basketball season All-Big Ten second team selection by the coaches and the media as a senior.
 Walton is the only Wolverine with 1,000-points, 500-rebounds and 400-assists and holds the school single-game assist record (16).
 He was the Most Outstanding Player of the 2017 Big Ten Conference Men's Basketball Tournament for the tournament champion 2016–17 Wolverines.
The 1945 Northwestern Wildcats team represented Northwestern University during the 1945 Big Ten Conference football season.
 In their 11th year under head coach Pappy Waldorf, the Wildcats compiled a 4–4–1 record (3–3–1 against Big Ten Conference opponents) and finished in fourth place in the Big Ten Conference.
 End Max Morris and guard Jim Lecture were selected by both the Associated Press and United Press as first-team players on the 1945 All-Big Ten Conference football team.
 Morris was also selected as a consensus first-team All-American.
The Baltimore–Washington metropolitan area is a combined statistical area consisting of the overlapping labor market region of the cities of Washington, D.C. and Baltimore, Maryland.
 The region includes Central Maryland, Northern Virginia, three counties in the Eastern Panhandle of West Virginia, and one county in South Central Pennsylvania.
 It is the most educated, highest-income, and fourth largest combined statistical area in the United States.
Hudson is a city in Summit County, Ohio, United States.
 The population was 22,262 at the 2010 census.
 It is an affluent suburban community in the Akron Metropolitan Statistical Area and the larger Cleveland–Akron–Canton Combined Statistical Area, the 15th largest Combined Statistical Area in the United States.
Zakarie Tyler "Zak" Irvin (born September 5, 1994) is an American basketball for Victoria Libertas Pesaro of the Italian League.
 He played college basketball for the Michigan Wolverines.
 He earned the 2013 Indiana Mr. Basketball and Indiana Boys Basketball Gatorade Player of the Year while playing for Hamilton Southeastern High School.
 At Michigan, he was twice recognized as Big Ten Conference Freshman of the Week for the 2013–14 team, which won the 2013–14 Big Ten Conference regular-season championship outright.
 He was a 2015–16 Big Ten Conference men's basketball season All-Big Ten honorable mention honoree by the coaches and the media as well as a 2016 Big Ten Conference Men's Basketball Tournament All-Tournament Team selection as a junior.
 He was a 2016–17 Big Ten Conference men's basketball season All-Big Ten honorable mention honoree by the media as a senior as well as a 2017 Big Ten Conference Men's Basketball Tournament All-Tournament Team selection for the champion 2016–17 Wolverines.
 He led the Big Ten in minutes played as a senior and tied the Michigan record for career games played (142).