Year	Percent
1950	5.15228
1955	4.191
1960	3.71796
1965	2.88125
1970	2.39631
1975	2.62582
1980	2.26183
1985	1.68317
1990	2.24123
1995	2.4705
2000	3.03979
2005	2.48578
2010	1.65041
2015	2.28435
2020	3.68796
2025	5.91925
2030	9.15557
2035	12.36563
2040	14.58995
2045	15.88586
2050	17.89309
2055	21.31478
2060	24.38387
2065	27.28555
2070	29.60977
2075	31.23067
2080	32.34376
2085	33.11472
2090	33.6972
2095	34.08697
2100	34.50366