A line graph captioned 'Atmospheric concentration of Ozone-Destroying Halogens.' with x-axis representing the 'Year' from 1992 to 2008 and y-axis representing 'Concentration in ppt' ranging from 1950 to 2300. It is clearly showing that ozone-destroying halogens from CFCs have been steadily decreasing since about 1994 and is at its lowest in 2008.