Line chart. Data table with 2 rows and 30 columns follows.
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9.9 | 8.9 | 10 | 9.4 | 10.8 | 9.7 | 7.5 | 9.1 | 9.4 | 9.5 | 10.1 | 9.3 | 9.8 | 9.8 | 9.2 | 9.1 | 9.6 | 10 | 9.8 | 9.4 | 8.4 | 10 | 9.7 | 9.3 | 10.8 | 10.7 | 10 | 10 | 11.2 | 10.7 |