How many WYD participants have there been over the years?
1984, Italy: 300,000
1985, Italy: 300,000
1987, Argentina: 1,000,000
1989, Spain: 500,000
1991, Poland: 1,600,000
1993, USA: 700,000
1995, Philippines: 5,000,000
1997, France: 1,200,000
2000, Italy: 2,200,000
2002, Canada: 800,000
2005, Germany: 1,100,000
2008, Australia: 500,000
2011, Spain: 2,000,000
2013, Brazil: 3,700,000
2016, Poland: 3,500,000
2019, Panama: 700,000