| year | price |
|---|---|
1998.0 |
2.9 |
1993.0 |
3.21 |
1989.0 |
3.88 |
2001.0 |
2.83 |
1996.0 |
4.77 |
1994.0 |
3.52 |
2007.0 |
5.76 |
2015.0 |
5.27 |
2006.0 |
4.04 |
1985.0 |
3.2 |