Year,rate,se
1985,0.042,0.015
1986,NA,NA
1987,0.039,0.006
1988,NA,NA
1989,0.073,0.022
1990,NA,NA
1991,0.012,0.005
1992,0.011,0.011
1993,NA,NA
1994,NA,NA
1995,0.027,0.008
1996,NA,NA
1997,0.001,0.001
1998,NA,NA
1999,,
2000,NA,NA
2001,NA,NA
2002,0,0
2003,NA,NA
2004,NA,NA
2005,NA,NA
2006,NA,NA
2007,NA,NA
2008,NA,NA
2009,NA,NA
2010,NA,NA
2011,NA,NA
2012,NA,NA
2013,0.004,0.002
2014,0.006,0.002
2015,NA,NA