D/E ratio history for Northern Trust Corporation
| Date | D/E ratio | 
|---|---|
| 31 Dec 2023 | 0.57 | 
| 31 Dec 2022 | 1.10 | 
| 31 Dec 2021 | 0.60 | 
| 31 Dec 2020 | 0.74 | 
| 31 Dec 2019 | 0.36 | 
| 31 Dec 2018 | 0.32 | 
| 31 Dec 2017 | 0.14 | 
| 31 Dec 2016 | 0.32 | 
| 31 Dec 2015 | 0.36 | 
| 31 Dec 2014 | 0.19 | 
| 31 Dec 2013 | 0.50 | 
| 31 Dec 2012 | 0.94 | 
| 31 Dec 2011 | 0.34 | 
| 31 Dec 2010 | 0.32 | 
| 31 Dec 2009 | 0.28 | 
| 31 Dec 2008 | 0.35 | 
| 31 Dec 2007 | 0.44 | 
| 31 Dec 2006 | 0.46 | 
| 31 Dec 2005 | 0.65 | 
| 31 Dec 2004 | 0.31 | 
| 31 Dec 2003 | 0.33 | 
| 31 Dec 2002 | 2.31 | 
| 31 Dec 2001 | 3.61 | 
| 31 Dec 2000 | 2.34 | 
| 31 Dec 1999 | 1.13 | 
| 31 Dec 1998 | 1.24 | 
| 31 Dec 1997 | 2.44 | 
| 31 Dec 1996 | 2.61 | 
| 31 Dec 1995 | 0.95 | 
| 31 Dec 1994 | 1.37 | 
| 31 Dec 1993 | 2.84 | 
| 31 Dec 1992 | 1.33 | 
| 31 Dec 1991 | 1.65 | 
| 31 Dec 1990 | 1.72 | 
| 31 Dec 1989 | 1.33 | 
| 31 Dec 1988 | 0.00 | 
| 31 Dec 1987 | 0.00 | 
| 31 Dec 1986 | 0.00 | 
| 31 Dec 1985 | 0.00 | 
