Year	Percent
1950	5.75709
1955	5.27538
1960	5.28002
1965	5.32904
1970	5.85668
1975	6.39907
1980	5.80828
1985	5.45964
1990	5.4185
1995	5.11619
2000	4.99383
2005	4.94839
2010	5.02289
2015	5.39305
2020	5.4529
2025	5.51546
2030	5.67095
2035	6.1233
2040	6.77858
2045	7.75565
2050	8.7969
2055	9.79681
2060	10.64365
2065	11.49606
2070	12.58272
2075	13.86574
2080	15.20024
2085	16.50845
2090	17.76133
2095	19.0148
2100	20.29911