"","years","acorn_category" "1",1983,"N" "2",1984,"A" "3",1985,"N" "4",1986,"N" "5",1987,"A" "6",1988,"N" "7",1989,"A" "8",1990,"N" "9",1991,"N" "10",1992,"A" "11",1993,"N" "12",1994,"A" "13",1995,"N" "14",1996,"N" "15",1997,"N" "16",1998,"A" "17",1999,"N" "18",2000,"N" "19",2001,"A" "20",2002,"N" "21",2003,"A" "22",2004,"N" "23",2005,"N" "24",2006,"A" "25",2007,"A" "26",2008,"N" "27",2009,"N" "28",2010,"N" "29",2011,"N" "30",2012,"N" "31",2013,"N" "32",2014,"A" "33",2015,"N" "34",2016,"A"