Table:
text: Royal Canadian Mint ice hockey coins
Hockey Hall of Fame
Hockey Hall of Fame
Year_of_issue Theme Composition Issue_price Mintage
1997 Hockey Hall of Fame Inductees Medallion Collection Sterling Silver $69.99 1997
1997 Hockey Hall of Fame Inductees Medallion Collection Nickel $19.95 N/A
1998 Hockey Hall of Fame Inductees Medallion Collection Sterling Silver $89.99 1998
1998 Hockey Hall of Fame Inductees Medallion Collection Nickel $29.00 (set), $7.50 (individually) N/A
1999 Hockey Hall of Fame Inductees Medallion Collection Sterling Silver $99.00 1999
2001 Hockey Hall of Fame Inductees Medallion Collection Nickel $29.95 N/A

Question: How many years was the issue price of the Royal Canadian Mint's ice hockey coins at $19.95 during the Hockey Hall of Fame?

Question: What composition has a $99.00 issue price in the Hockey Hall of Fame of Royal Canadian Mint ice hockey coins?