Year	Percent
1950	8.17711
1955	10.0691
1960	10.13561
1965	9.12551
1970	8.24638
1975	7.37388
1980	7.55563
1985	7.3357
1990	7.18469
1995	6.64604
2000	5.78638
2005	5.8957
2010	5.1134
2015	5.47757
2020	5.25601
2025	4.9238
2030	4.69616
2035	4.59388
2040	4.55651
2045	4.60561
2050	4.67115
2055	4.64264
2060	4.5499
2065	4.49642
2070	4.51359
2075	4.57952
2080	4.65646
2085	4.69843
2090	4.68417
2095	4.6502
2100	4.63962