In percentages , how much of an increase in people playing rugby union or one of its variants from 2007 to 2011 ?
1974 Luxembourg Rugby Federation 1975 USA Rugby ( founded as United States of America Rugby Football Union ) 1977 Brunei Rugby Football Union 1982 Norwegian Rugby Union 1986 Andorran Rugby Federation 1989 Tahiti Rugby Union 1989 Cook Islands Rugby Union 1990 Namibia Rugby Union 1990 Hungarian Rugby Union 1992 Austrian Rugby Federation 1992 South African Rugby Union ( founded as South Africa Rugby Football Union , a merger of the white South African Rugby Board and the non-racial South African Rugby Union ; adopted current name in 2005 ) 1996 Monegasque Rugby Federation 1997 Peruvian Rugby Federation 1998 Philippine Rugby Football Union 2000 Pakistan Rugby Union 2004 Azerbaijani Rugby Federation 2008 Ecuadorian Rugby Federation 2007 Jordan Rugby Union .