Year | Average price |
1994 | 1.077833 |
1995 | 1.156667 |
1996 | 1.2445 |
1997 | 1.245 |
1998 | 1.155583 |
1999 | 1.175167 |
2000 | 1.525333 |
2001 | 1.466167 |
2002 | 1.381833 |
2003 | 1.601083 |
2004 | 1.857917 |
2005 | 2.312167 |
2006 | 2.615083 |
2007 | 2.8455 |
2008 | 3.305083 |
2009 | 2.396667 |
2010 | 2.833583 |
2011 | 3.576417 |
2012 | 3.686167 |
2013 | 3.576417 |
2014 | 3.358667 |
2015 | 2.517167 |
2016 | 2.2525 |
2017 | 2.530333 |
2018 | 2.817333 |
2019 | 2.68575 |
2020 | 2.25975 |
2021 | 3.09125 |
2022 | 4.4436 |