Back to Country Profile
Historical Values
Year Value
1999 US 62% (1997 est.)
2000 US 60% (1999)
2001 US 60% (2000)
2002 US 60% (2000)
2003 US 53.5%, Ireland 16.3%, Japan 4.5% (2001)
2004 US 55.0%, Ireland 23.7%, Japan 5.4% (2002 est.)
2005 US 55.0%, Ireland 23.7%, Japan 5.4% (2002 est.)
2006 US 55.0%, Ireland 23.7%, Japan 5.4% (2004)
2007 US 55.0%, Ireland 23.7%, Japan 5.4% (2006)
2008 US 55.0%, Ireland 23.7%, Japan 5.4% (2006)
2021 Ireland 38%, Singapore 9%, Switzerland 8%, South Korea 5% (2019)
2022 Ireland 38%, Singapore 9%, Switzerland 8%, South Korea 5% (2019)
2023 Ireland 38%, Singapore 9%, Switzerland 8%, South Korea 5% (2019)
2024 Ireland 38%, Singapore 9%, Switzerland 8%, South Korea 5% (2019)
2025 Ireland 38%, Singapore 9%, Switzerland 8%, South Korea 5% (2019)