Question: What was the estimated population in 2017 of the city where the 2016 Rally Australia was held?

Context paragraphs:
2016 Rally de Portugal: The 2016 Rally de Portugal (formally the 50.  Vodafone Rally de Portugal 2016) was the fifth round of the 2016 World Rally Championship.  The race was held over four days between 19 May and 22 May 2016, and was based in Matosinhos, Portugal.  Citroën's Kris Meeke won the race, his 2nd win in the World Rally Championship.

2016 Rally Finland: The 2016 Rally Finland (formally known as the 66.  Neste Rally Finland) was the eighth round of the 2016 World Rally Championship season, an auto racing event for rally cars.  It was held over twenty-four stages based in and around Jyväskylä in central Finland from 28 July to 31 July 2016, with competitors covering 333.99 km of competitive kilometres.  It was won by Northern Irishman Kris Meeke, his second win of the season.  Meeke established a new record for the fastest FIA WRC round in history - the 126.60 km/h average speed beat the previous record by 1.2 km/h.

Coffs Harbour: Coffs Harbour is an Australian coastal city located on the Mid North Coast of New South Wales about 540 km north of Sydney, and 390 km south of Brisbane.  It is one of the largest urban centres in the North Coast region, with an estimated population of 70,000 as of June 2017.

2011 Australian Rally Championship: The 2011 Australian Rally Championship is series of five rallying events held across Australia, including the World Rally Championship event, Rally Australia and Asia Pacific Rally Championship event, 2011 International Rally of Queensland.  It is the 44th season in the history of the competition and the first in several decades to not feature any former champions.

Rally Australia: Rally Australia is an automobile rally event which was held in and around Perth, Western Australia from 1988 until 2006, when that state's tourism commission severed its collaboration with the event.  The rally was part of the Asia-Pacific Rally Championship in 1988 and the World Rally Championship from 1989 to 2006.  The event returned in 2009 to the Northern Rivers region of New South Wales in early September and alternated with Rally New Zealand for 2010 and 2012 before becoming an annual fixture in its own right from 2013.  From 2011 the event was relocated to Coffs Harbour.

2011 Rally Australia: The 2011 Rally Australia was the 21st Rally Australia and the tenth round of the 2011 World Rally Championship season.  The rally took place over 8–11 September, and was based in Coffs Harbour, a coastal city in the New South Wales state of Australia.  The rally was also the fifth round of the Production World Rally Championship.  Rally Australia returned to the WRC calendar after a year's hiatus, and after demonstrations marred the 2009 running of the rally, held north of Coffs Harbour in the Northern Rivers area.  Residents' concerns for the event meant that the rally was moved for the foreseeable future to Coffs Harbour.

2016 Rally d'Italia: The 2016 Rally di Sardegna (formally the 13º Rally Italia Sardegna) was the sixth round of the 2016 World Rally Championship.  The race was held over four days between 9 June and 12 June 2016, and was based in Alghero, Sardinia, Italy.  Hyundai's Thierry Neuville won the race, his 2nd win in the World Rally Championship.

2004 Rally Australia: The 2004 Rally Australia (formally the 17th Telstra Rally Australia) was the sixteenth and final round of the 2004 World Rally Championship.  The race was held over four days between 11 November and 14 November 2004, and was based in Perth, Australia.  Citroën's Sébastien Loeb won the race, his 10th win in the World Rally Championship.

2016 Rally Sweden: The 2016 Rally Sweden (formally known as the 64.  Rally Sweden) was a motor racing event for rally cars that was held over four days between 12 and 14 February 2016.  It marked the sixty-fourth running of the Rally Sweden, and was the second round of the 2016 World Rally Championship, WRC-2 and WRC-3 seasons.

2016 Rally Australia: The 2016 Rally Australia (formally the 25.  Kennards Hire Rally Australia 2016) was the fourteenth and final round of the 2016 World Rally Championship.  The race was held over four days between 17 November and 20 November 2016, and was based in Coffs Harbour, New South Wales, Australia.  Volkswagen's Andreas Mikkelsen won the race, his third win in the World Rally Championship.

Supporting paragraphs: 2016 Rally Australia Coffs Harbour
Answer: 70,000