A line chart showing how natural gas prices have risen from an average of $2.20 per million British thermal units between 1994 and 1999 to an average of $4.20 per million British thermal units since 2000. In November 1993, the price of natural gas was $2.32. In September 1994, it dropped to $1.47, and, in July 1995, fell to $1.44. In May 1996, the price rose to $2.24 and was $2.22 in February 1997. In December 1997, the price had risen slightly to $2.33 but dropped in October 1998 to $1.89. In August 1999, it was at $2.79. In June 2000, the price was at $4.29 and rose to $5.17 in April 2001. In January 2002, the price dipped to $2.26 but rose again in November 2002 to $4.03.