Two-time championship QB's year-by-year

Ok, this should be Past Interference's last post on this topic until we approach the November showdown between Brady and Roethlisberger.  In 1939 Arnie Herber became the first NFL quarterback to ever win two championship games.  He's since been joined by 18 other men.  Two of them, Norm Van Brocklin and John Elway, retired after winning their second title.  Here's a list showing the years in which multiple-title winning QB's were active with some notes following of things I happen to find interesting:

1940 Herber
1941 none
1942 Luckman
1943 Luckman, Baugh
1944 Luckman, Baugh, Herber
1945 Luckman, Baugh, Herber
1946 Luckman, Baugh
1947 Luckman, Baugh
1948 Luckman, Baugh
1949 Luckman, Baugh
1950 Luckman, Baugh, Thompson
1951 Baugh
1952 Baugh, Waterfield
1953 none
1954 Layne
1955 Layne, Graham
1956 Layne
1957 Layne
1958 Layne
1959 Layne
1960 Layne, Unitas
1961 Layne, Unitas
1962 Layne, Unitas
1963 Unitas, Starr
1964 Unitas, Star
1965 Unitas, Starr
1966 Unitas, Starr
1967 Unitas, Starr
1968 Unitas, Starr
1969 Unitas, Starr
1970 Unitas, Starr
1971 Unitas, Starr
1972 Unitas
1973 Unitas
1974 Griese
1975 Griese
1976 Griese, Bradshaw
1977 Griese, Bradshaw
1978 Griese, Bradshaw, Staubach
1979 Griese, Bradshaw, Staubach
1980 Griese, Bradshaw
1981 Bradshaw
1982 Bradshaw
1983 Bradshaw
1984 Plunkett
1985 Plunkett, Montana
1986 Montana
1987 Montana
1988 Montana
1989 Montana
1990 Montana
1991 Montana
1992 Montana
1993 Montana
1994 Montana, Aikman
1995 Aikman
1996 Aikman
1997 Aikman
1998 Aikman
1999 Aikman
2000 Aikman
2001 none
2002 none
2003 none
2004 Brady
2005 Brady
2006 Brady
2007 Brady
2008 Brady
2009 Brady, Roethlisberger

Notes:

1) Number of seasons since 1940 with no active QB who'd won two or more championships: 5 (1941, 1953, and 2001-2003).

2) From 1954 through 2000 the NFL went 47 consecutive seasons with at least one active QB who'd won two or more championships.

3) Number of seasons with three active QB's who'd won two or more championships: 4 (1944-1945, 1978-1979).

4) Number of postseason matchups between QB's who'd won two or more championships: 3 (1943 title game, Super Bowl XIII, 1979 Divisional Playoffs)

5) Number of championship game matchups between QB's who'd won two or more championships: 2 (1943 title game, Super Bowl XIII)

6) Most seasons started by a QB after winning his second championship: 14 (Unitas)

7) Most seasons played as the league's only active QB with two or more championships: 8 (Montana)